Parameterizing and diagnosis functions for all bus couplers
PCD0
26/766 E2
(HB_PCD0 26 766_E2.DOC)
SAIA-Burgess Controls Ltd.
Page 147
10.5
Function 1 Monitor module power supply
Function 1 provides information on the status of the output driver
power supply of the expansion modules.
Diagnose Output
Diagnose Input
Byte 3
Byte 2
Byte 1
Byte 0
Byte 3
Byte 2
Byte 1
Byte 0
EC/BC
7 0
In the above example the bus coupler signals a fault on the output
driver power supply for expansion modules 3 and 6.
Diagnose Input
Byte 2
Bit
value
Meaning
0
Output driver of expansion module at position n is correctly
supplied with 24V
1
24V supply to module at position n* not connected
The module position n is the same as the bit position in Byte 2
Module location numbers:
