SMC Networks EX510-GPR1 Series Operation Manual page 27

Byte8: GW unit status information
∗: Unit status information sends information of above byte 7 and 8 to the master through switch setting.
Byte9 to Byte10: Reserved (all 00h)
Bit 7
0 0 0 0
-26-
0
0 0 0 0
"1" when COM A port of the
input unit is abnormal
"1" when COM B port of the
input unit is abnormal
"1" when COM C port of the
input unit is abnormal
"1" when COM D port of the
input unit is abnormal
Reserved
No.EX##-OMI0032-C