Bus specific parameters
7SJ61/62/63 6MD63 – Modbus
C53000-L1840-C001-01
1-2
Processing of
broadcast
messages
If one of the Modbus messages "Force Single Coil", "Preset Single
Register", "Force Multiple Coil" or "Preset Single Regs" (ref. to chap. 2)
is transmitted from the Modbus master to the Modbus slaves using slave
address 0 all Modbus slaves recognize this message as a broadcast
message and process it.
For every Modbus slave of a SIPROTEC device can be decided whether
broadcast messages are accepted for coil status registers and/or
holding registers.
Per default this option is enabled and all broadcast messages are
processed.
Note
Modbus Plus is not supported by the Modbus slave of the SIPROTEC
devices 7SJ61, 7SJ62, 7SJ63 and 6MD63.
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