modbus to scanport gateway

1550-mbs

the prosoft 1550-mbs modbus module is designed to allow modbus based plcs and host systems to interface directly to the allen-bradley family of scanport based devices.included in this family are the a-b variable speed drives (1305 micro, 1336 plus, vector, force, etc.), the smc dialogue plus and the smp3. the following functionality is available in the 1550-mbs unit: multi-dr-op on an rs-485 link with other modbus compatible devices interface via r-232 in a point-to-point mode be applied in existing or retrofit applications where other manufacturer"s devices are in use.

features

simple to usethe 1550-mbs module is simple to use, requiring only the setting of several dip-switch options. the parameters from the a-b devices are pre-mapped to simplify reading and writing using standard modbus commands.

accessible parametersthe 1550-mbs has read/write access to the entire parameter table in a scanport device. all parameters can be accessed using function codes 3, 6 and 16. in addition high speed parameter updating can be configured through datalinks.

installation, set up and operation

the prosoft 1550-mbs is a scanport gateway allowing all a-b scanport compatible devices to interface to a modbus host. the product"s functional characteristics are enabled and controlled with the setting of several dip switches. each product is shipped with a user manual detailing its installation and operation.

applications

• applications involving the 1550-mbs cards include many industrial sectors- food processing- mining- pulp and paper- hvac

functional specifications

modbus specifications

• rtu mode (binary) with crc-16 error checking
• accepts broadcast commands from the master
• function codes3: read multiple output registers6: preset (write) single data register16: preset (write) multiple data registers

• pre-assigned modbus memory map- read/write: command control and reference, datalinks out: a to d, up to 575 parameter values- read only: status/feedback, datalinks in: a to d

• configuration via dip switches- slave address: 1 to 247- fault on loss of comm. enable- scanport messaging options: datalinks a, b, c, d enable

• communication parameters- address: 1 to 247- parity: , odd or even- stop bits: 1 or 2- baud rate: 300 to 19.2 k

• communication port connections- modbus - female 9-pin db: supports rs-232 and rs-485- scanport - scanport connector

ordering information