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
4-7
4
Standard diagnosis
Byte
Bit
Abbreviation
Explanation
1
0
non_exist
Slave does not exist (master set)
1
station_not_ready
Slave not ready for data exchange
2
cfg_fault
Configuration data of master and slave
differentiate
3
ext_diag
Extended diagnostic bytes
4
Reserve
5
invalid_slave_response
Always set to 0 by the slave
6
prm_fault
Wrong parameter
7
master_lock
Slave parameterized by a master
2
0
prm_req
Slave must be reparameterized
1
stat_diag
Static diagnosis
2
Always 1
3
wd_on
Watchdog monitoring active
4
freeze_mode
Freeze instruction active
5
sync_mode
Sync instruction active
6
Reserve
7
slave_deactivated
1 when slave deactivated by master
3
0 … 6
Reserve
7
ext_diag_overflow
Diagnostic data overflow in the master or slave
4
Master address
5, 6
ID (0xCD32)
Extended diagnosis
1) Power failure with a PCD3.C200 or defective cable to a PCD3.C1x0
Byte
Bit
Explanation
7
0x02 Device related diagnostics, 2 bytes (including the header byte)
8
0xFF External power failure, defective cable to a PCD3.C1x0 or power failure in
a PCD3.C200
2) Error accessing an I/O module
Byte
Bit
Explanation
7 (9)
0x43
Identification-related diagnosis, 3 bytes (including the header byte)
8 (10)
0
:
7
Error accessing module 0
:
Error accessing module 7
9 (11)
0
:
7
Error accessing module 8
:
Error accessing module 15
It is possible that both diagnostic messages are sent in the same telegram. In this
case, the entries described above are packed into a frame, e.g. the identification-
related diagnosis starts with octet 9 and ends with octet 11.