248 lines
6.0 KiB
Plaintext
248 lines
6.0 KiB
Plaintext
GENERIC_MODBUS(8)
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=================
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NAME
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----
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generic_modbus - Driver for contact (direct) signal UPS devices connected via modbus remote I/O gateways
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SYNOPSIS
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--------
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*generic_modbus* -h
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*generic_modbus* -a 'DEVICE_NAME' ['OPTIONS']
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NOTE: This man page only documents the specific features of the *generic_modbus*
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driver. For information about the core driver, see linkman:nutupsdrv[8].
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SUPPORTED HARDWARE
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------------------
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This is a generic modbus driver expected to work with contact (direct) signal
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UPS devices, connected via modbus RIO (remote I/O) either serial or TCP/IP.
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The driver has been tested against PULS UPS (model UB40.241)
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via MOXA ioLogikR1212 (RS485) and ioLogikE1212 (TCP/IP).
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More information about this UPS can be found here: ::
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https://products.pulspower.com/ca/ubc10-241-n1.html
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More information about Moxa ioLogik R1212, E1212 can be found here: ::
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https://www.moxa.com/en/products/industrial-edge-connectivity/controllers-and-ios
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The PULS UPS UB40.241 supports the following signals:
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----
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Ready contact (DO) <--> HB
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Buffering contact (DO) <--> OL | OB
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Battery-low (DO) <--> LB
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Replace Battery (DO) <--> RB
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Inhibit (DI) <--> FSD
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----
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Digital port direction (DI/DO) assumes the device perspective
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The driver's concept is to map the UPS states (as defined in NUT) onto
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UPS contacts' states. The driver has an extended configuration interface
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implemented using variables defined in ups.conf.
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HARDWARE INTERCONNECTION
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------------------------
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The commission of modbus remote I/O server as well as UPS device is carried
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out following the corresponding instruction manuals. The following figure
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depicts the anticipated communication path and hardware interconnection:
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----
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+------+ +----------------+ +------------+ +------------+
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| UPSD | <---> | GENERIC_MODBUS | <---> | MODBUS RIO | <---> | UPS DEVICE |
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+------+ (1) +----------------+ (2) +------------+ (3) +------------+
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+-------------------+
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HOST CONTROLLER
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(1) Unix IPC
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(2) RS232 | TCP/IP
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(3) contacts
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----
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EXTRA ARGUMENTS
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---------------
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This driver supports the following optional settings in the
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linkman:ups.conf[5] file:
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Generic:
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~~~~~~~
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*device_mfr*='value'::
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A string specifying the manufacturer of the UPS device (default UNKNOWN).
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*device_model*='value'::
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A string specifying the model of the UPS device (default UNKNOWN).
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Serial:
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~~~~~~
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*ser_baud_rate*='value'::
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A integer specifying the serial port baud rate (default 9600).
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*ser_data_bit*='value'::
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A integer specifying the serial port data bit (default 8).
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*ser_parity*='value'::
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A character specifying the serial port parity (default N).
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*ser_stop_bit*='value'::
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An integer specifying the serial port stop bit (default 1).
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Modbus:
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~~~~~~
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*rio_slave_id*='value'::
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An integer specifying the RIO modbus slave ID (default 1).
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States (X = OL, OB, LB, HB, RB, CHRG, DISCHRG, FSD)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*<X>_addr*='value'::
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A number specifying the modbus address for the X state.
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*<X>_regtype*='value'::
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A number specifying the modbus register type for the X state
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Default values: ::
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+
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----
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1 for X = OL, OB, LB ,HB, RB, CHRG, DISCHRG
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0 for X = FSD
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----
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Valid values: ::
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+
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----
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0:COIL, 1:INPUT_B, 2:INPUT_R, 3:HOLDING
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----
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*<X>_noro*='value'::
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A number specifying the contact configuration for the X state (default 1).
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Valid values: ::
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+
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----
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0:NC, 1:NO
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----
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+
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NOTE: NO stands for normally open and NC for normally closed contact
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Shutdown
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~~~~~~~~
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*FSD_pulse_duration*='value'::
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A number specifying the duration in ms for the inhibit pulse.
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If it's not defined, signal has only one transition depending
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on FSD_noro configuration.
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+
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Examples for FSD signal configuration:
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----
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FSD_noro = 1
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FSD_pulse_duration = 150
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+-----+
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inhibit pulse >-----+ +------------------>
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<--->
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150ms
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FSD_noro = 0
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inhibit pulse >-----+
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+------------------------>
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----
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CONFIGURATION
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-------------
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Here is an example of generic_modbus driver configuration in *ups.conf* file:
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----
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[generic_modbus]
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driver = generic_modbus
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port = /dev/ttyUSB0
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desc = "generic ups driver"
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# device info
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device_mfr = "PULS"
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device_model = "UB40.241"
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# serial settings
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ser_baud_rate = 9600
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ser_parity = N
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ser_data_bit = 8
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ser_stop_bit = 1
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# modbus slave id
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rio_slave_id = 5
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# UPS signal state attributes
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OB_addr = 0x0
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OB_regtype = 1
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OB_noro = 0
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LB_addr = 0x1
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LB_regtype = 1
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HB_addr = 0x2
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HB_regtype = 1
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RB_addr = 0x3
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RB_regtype = 1
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FSD_addr = 0x0
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FSD_regtype = 0
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FSD_pulse_duration = 150
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----
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INSTANT COMMANDS
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----------------
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This driver support the following instant commands:
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load.off::
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executes "instant poweroff"
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INSTALLATION
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------------
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This driver is not built by default. You can build it by installing
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libmodbus and running `configure --with-modbus=yes`.
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You also need to give proper permissions on the local serial device
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file (/dev/ttyUSB0 for example) to allow the run-time NUT driver user
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account to access it.
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OTHER NOTES
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-----------
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The `generic_modbus` driver intends to support generic UPS devices with
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contact signals through modbus TCP/RTU gateways (also known as RIO --
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remote I/Os). The data and signal path looks like this:
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----
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[UPSD] <--- IPC ---> [GENERIC_UPS] <--- modbus TCP/RTU ---> MODBUS-RIO <--- contacts ---> [UPS DEVICE]
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----
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On the other hand, you can setup any kind of modbus server, and configure
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the `generic_modbus` driver to connect and read or write specific registers.
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Your application / modbus server could then drive NUT statuses (e.g. OL, OB,
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HB etc) by writing over those registers.
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AUTHOR
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------
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Dimitris Economou <dimitris.s.economou@gmail.com>
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SEE ALSO
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--------
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The core driver:
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~~~~~~~~~~~~~~~~
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linkman:nutupsdrv[8], linkman:ups.conf[5]
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Internet resources:
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~~~~~~~~~~~~~~~~~~~
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* The NUT (Network UPS Tools) home page: http://www.networkupstools.org/
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* libmodbus home page: http://libmodbus.org
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