Micromod MOD: Modcell 2050R MODBUS Communications User Manual
Page 38
IB-23C650M
MODBUS PROTOCOL
Messages Supported
The controller utilizes registers and coils to access information. The following
MODBUS messages are supported by the controller. See the Gould
MODBUS Protocol Reference Guide dated Jan. 1985 for further detail.
Note:
In cases where the controller processor is already heavily loaded, it
may be necessary to limit the number of registers or coils addressed
by any single message. Limiting the number of coils and registers in
a single message will avoid pushing the instrument into the "over
configured" condition (>250 milliseconds scan time). Only repetitive
messages are a concern in this regard.
34
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