Bender PEM533, Manual

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Modbus Register Map
84 PEM533_D00013_00_M_XXEN/06.2015
8.11 DOx control
The control register of the digital outputs are implemented as Write-Only registers
(WO) and can be controlled with the function code 0x05. In order to query the cur-
rent DO status, the register
0081 have to be read out.
PEM533 supports the execution of commands to the outputs in two steps ( ARM
before EXECUTING ): Before sending an open or close command to one of the out-
puts, it must be activated first. This is achieved by writing 0xFF00 to the appropriate
DO register. If an "Execute" command is not received within 15 seconds, the output
will be deactivated again.
Each command that is to be sent to an output not being activated before will be
ignored by the PEM533 and instead will be returned as exception code 0x04.
Table 8.26: Digital output control register
Register Property Format Description
9100 WO UINT16 Activate DO1 close
9101 WO UINT16 Execute DO1 close
9102 WO UINT16 Activate open DO1 open
9103 WO UINT16 Execute DO1 open
9104 WO UINT16 Activate DO2 close
9105 WO UINT16 Execute DO2 close
9106 WO UINT16 Activate DO2 open
9107 WO UINT16 Execute DO2 open
9108…9165 Reserved