
PET-70216/ET-7026 User Manual, version 1.0.1 beta1, Page: 82
COM1 ~ COM8
communication status for
Modbus mapping
1: CRC error
-2: Receiving
response timeout
0 ~ 255: Exception
code
500: busy
501: Command not
sent yet.
502: Command
already sent, but no
data received.
503: not match
parameters
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