Pixsys STR561, Руководство пользователя

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STR561 - User manual
Address 255 can be used by the master to communicate with all the connected
equipment (broadcast mode), while with 0 all the devices receive the command,
but no response is expected.
STR561 can introduce a delay (in milliseconds) in the response to the master
request. This delay must be set on parameter 129 Serial Delay
.
Each parameter change is saved by the controller on EEPROM memory (100000
writing cycles).
NB : changes made to Words that are different from those reported in the
following table can lead to malfunction.
Modbus RTU protocol features
Baud-rate
Selection on parameter 127
Baud Rate
:
1.200 baud 28.800 baud
2.400 baud 38.400 baud
4.800 baud 57.600 baud
9.600 baud 115.200 baud
19.200 baud
Format
Selection on parameter 128
Serial format
:
8, N, 1 (8 bit, no parity, 1 stop)
8, E, 1 (8 bit, even parity, 1 stop)
8, O, 1 (8 bit, odd parity, 1 stop)
8, N, 2 (8 bit, no parity, 2 stop)
8, E, 2(8 bit, even parity, 2 stop)
8, O, 2 (8 bit, odd parity, 2 stop)
Supported
functions
WORD READING (max 20 word) (0x03, 0x04)
SINGLE WORD WRITING (0x06)
MULTIPLE WORDS WRITING (max 20 word) (0x10)
Looking at the table here below it is possible to find all available addresses and
functions:
RO Read Only R/W Read / Write WO Write Only