Saia-Burgess Controls AG
H
ardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Diagnosis Information of the RIO
RIO (Remote Input Output) head stations
4-9
4
Query RIO status (command 2)
This function returns the current status of the RIO
Master→RIO
Byte 0
Byte 1
Byte 2
Byte3
irrelevant
irrelevant
irrelevant
2
RIO→Master
Byte 0
Byte 1
Byte 2
Byte3
Status 0
Status 1
Status 2
2
Coding of bits in status 0:
Bit
Explanation
7
DIAG LED: Set when diagnostic information is due
6
Set, in the event of power failure on the external I/O-bus
5
Set if valid configuration exists in EEPROM
4
Set, when a clear com from the slave is due
3
Set, as soon as a lock is active
2
Reserve
1
Reserve
0
Reserve
Coding of the bits in status 1 and 2 are not yet defined.