PXM PX340, Manual

Page: 32 / 42

Below there are presented Modbus commands supported by the controller:
a) Commands
32
Modbus command Controller reaction
standard
1 Read Coils n ot supported
3 Read Holding registers r eturns the state of digital inputs in bits
4 Read Input Registers r eturns the status of the controller
5 Write Single Coil n ot supported
6 Write Single Register s ets the value of a single input channel of the Modbus
15 Write Multiple Coils
not supported
16 Write Multiple Register s ets the value of many input channels of the Modbus
own
65 Internal event
t riggers an internal event with no value, the argument is
the number of a virtual event
66 Internal event
t riggers several internal events without values,
the arguments are the numbers of virtual events
67 Internal event
t riggers an internal event with a value, the first argument
is the number of virtual events, the second is the value
of the event
68 Internal event
t riggers several internal events with values, the
arguments are the numbers of virtual events
69 Action t riggers a specific action
70 Action t riggers many actions
In the case of the “Write single Register” command, the Modbus input is treated as a multi-value
input with 512 channels. The parameters of each channel are set in the same manner as in the
case of a DMX input.