产品展示
优质供应
详细内容
modbus master/slave communication module
mvi69-mcm
the inrax modbus master/slave communications module (mvi69-mcm) is designed to allow compactlogix processors to easily interface with modbus protocol-compatible devices and hosts. many host scada packages support the modbus protocol, while devices commonly supporting the protocol include several plcs, as well as many other 3rd party devices in the marketplace. (for a partial list of devices that speak modbus, please visit the prosoft tested section of the prosoft web site).
the module has two serial ports supporting the modbus protocol, with each port user-configurable to act as a master or as a slave. data transfer between the module and the compactlogix processor is asynchronous to the modbus network, with the module"s internal database being used to exchange data between the processor and the modbus network.
the mvi69-mcm module is a powerful communication interface for compactlogix platform processors. developed under license from rockwell automation, the module incorporates proprietary backplane technology that enables powerful data access between the module and the compactlogix processor.
features
- single slot: compactlogix backplane compatible
- the module is configured using the generic profile in the rslogix programming software
- supports all compactlogix processors: l20/l30/l31/l32/l35
- the micrologix 1500 controller with lrp firmware version 6.0 or better is supported by the module
- module setup via a simple configuration text file downloaded via configuration/debug port
- configuration data is stored in the module"s non-volatile memory
- 60 (default), 120 and 240 word input/output data transfer lengths available, user se-lectable
- 4000 registers (words) available for transfer to and from compactlogix processor
- multiple modules can be placed in the same rack; up to the limits of the power supply and backplane data transfer
- local and extended rack: the module will function in both the local and the extended rack configurations
- high speed data transfer across the backplane provides quick data up-date times. data transfer timing tests based on different input and output data block lengths yielded the following best case results with an l35e processor:
i/o blockdata transfer
size (words/sec)
60 words 5000
120 words 11000
240 words 18000
applications
functional specifications
general protocol specifications
type | specifications |
communication parameters (configurable) | port 1: baud rate: 110 to 38.4k baud port 2,3: baud rate: 110 to 115k baud stop bits: 1 or 2 data size: 5 to 8 bits parity: , odd, even rts timing delays: 0 to 65535 ms |
modbus modes | rtu mode (binary) with crc-16 ascii mode with lrc error checking |
floating point data | floating point data movement supported, including configurable support for enron implementation |
modbus slave protocol specifications
the ports on the mvi69-mcm module can be individually configured to support the slave mode of the modbus protocol. when in slave mode, the module can accept modbus commands from a master to read/write data stored in the module"s internal registers. this data is easily transferred to the compactlogix processor"s data registers.
modbus slave driver | |
node address | 1 to 247 software se-lectable |
status data | error codes, counters, and port status available per configured slave port starting at memory register 4400 |
modbus function codes | 1: read output status 2: read input status 3: read multiple data registers 4: read input registers 5: write single bit 6: write single data register 15: write multiple bits 16: write multiple data register |
modbus master protocol specifications
the ports on the mvi69-mcm module can be individually configured as master ports. when configured in master mode, the mcm module is capable of reading and writing data to remote modbus devices, enabling the compactlogix platform to act as a scada sub-master, or a device data concentrator.
modbus master driver | |
command list | up to 100 commands per master port, each fully configurable for function, slave address, register to/from addressing and word/bit count |
status data | error codes available on an individual command basis. in addition, a slave status list is maintained per active modbus master port |
polling of command list | configurable polling of command list, including continuous and on change of data |
modbus function codes | 1: read output status 2: read input status 3: read multiple data registers 4: read input registers 5: write single bit 6: write single data register 15: write multiple bits 16: write multiple data register |
configuration/debug port functionality
the configuration/debug serial port is used to connect to a pc for configuration, status monitoring, and troubleshooting (6-foot serial cable included with product shipment). after editing on a pc, a text configuration file is downloaded and stored in the module.
once operational, the debug port allows access to detailed protocol and module status data, as well as provides a view of the communications data bytes via an on-board data analyzer
hardware specifications
dimensions | standard 1769 single-slot module |
current load | 800 ma max@ 5 vdc (serial)900 ma max@ 5 vdc (ethernet)power supply distance rating 2 |
operating temp. | 0 to 60 deg c |
32 to 140 deg f | |
storage temp. | -40 to 85 deg c |
-40 to 185 deg f | |
relative humidity | 5 - 95% (w/o condensation) |
led indicators | power and module status |
application status | |
serial port activity | |
serial activity and error status | |
cfg port | rj45 (db-9m w/ supplied cable) |
rs-232 only | |
no hardware handshaking | |
app port | rj45 (db-9m w/supplied cable) |
rs-232/422/485 jumper-se-lectable | |
rs-232 handshaking configurable | |
rs-422/485 screw terminal included | |
500v optical isolation from backplane | |
ethernet port (ethernet modules) | 10/100 mb ethernet compatible interface |
shipped with unit | rj45 to db-9m cables for each port |
6-foot rs-232 configuration cable |
ordering information
| part number | part desc-ription |
| mvi69-mcm | modbus master/slave communication module |
