The terminals 1.8 and 2.8 as well as 1.9, 2.9 and 3.9 are electrically interconnected within the
terminal unit and have always the same assignment, independent of the inserted module:
Terminals 1.8 and 2.8: Process supply voltage UP = +24 V DC
Terminal 3.8: Process supply voltage UP3 = +24 V DC
Terminals 1.9, 2.9 and 3.9: Process supply voltage ZP = 0 V
With a separate UP3 power supply, the digital outputs can be switched off
externally. This way, an emergency-off functionality can be realized.
Conditions for undisturbed operating with older I/O expansion modules
All I/O expansion modules that are attached to the CI52x-MODTCP must be
powered up together with the CI52x-MODTCP if the firmware version of these
I/O expansion modules is V1.9 or lower.
The firmware version is related to the index. The index is printed on the module type label on
the right side.
Modules as of index listed in the following table can be powered up independently.
S500 I/O module type
First index with firmware version above 1.9
AI523
D0
AI523-XC
D0
AI531
A3
AI531-XC
A0
AO523
D0
AO523-XC
D0
AX521
D0
AX521-XC
D0
AX522
D0
AX522-XC
D0
CD522
A2
CD522-XC
A0
DA501
A2
DA501-XC
A0
DA502
A1
DA502-XC
A1
DC522
D0
DC522-XC
D0
DC523
D0
DC523-XC
D0
DC532
D0
DC532-XC
D0
DI524
D0
Device specifications
Communication interface modules (S500) > Modbus
2022/01/31
3ADR010278, 3, en_US
772