Minebea CSD-912B - Modbus Communication

9.1.Standard RS-485 interface
213
External equipment
9
2) Check the setting that you set
1. Check the output target setting for stream
mode.
The setting is completed if the item set by the step
1) above appears under [TARGET OF STREAM].
9.1.4. Modbus communication
The Modbus communication is a serial interface that uses standard RS-485 communication.
It allows data communication with CSD-912B by memory operation, thus eliminating the need
for creating communication protocol programs. To use the Modbus communication, set each
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Function Setting value
Operation mode Modbus
Baud rate Selectable from 1 200 bps, 2 400 bps, 4 800 bps, 9 600 bps, 19
200 bps and 38 400 bps.
Data bit length 8 bit
Parity bit 6HOHFWDEOHIURP121((9(1DQG2''
Stop bit Selectable from 1 bit and 2 bit.
Address number Selectable from 0 to 31.
Note that 0 is a broadcast address.
RS-485 data delay time 0.10 seconds or more
POINT
- For more information about the RS-485 communication setting, refer to "9.1.3.
Communication setting".
- Neither [ADD THE DECIMAL POINT] nor [TERMINATOR] needs to be set as
they do not affect the Modbus communication.
- The standard RS-485 communication and Modbus communication cannot be
linked with optional RS-232C communication, RS-422 communication, or RS-485
communication.
- Set a delay time of 5 ms or more for the host side, such as a PC or a sequencer.
- For more information about memory operation, refer to "12.4. Modbus
communication memory operation mapping".
- Modbus is a registered trademark of Modicon, Inc.