Setup With Different Voltage Classes - Siemens LOGO! Series Manual

LOGO! installation and wiring
2.1 Modular LOGO! setup
2.1.3

Setup with different voltage classes

Rules
Digital modules can only be directly connected to devices of the same voltage class.
You can connect analog and communication modules to devices of any voltage class.
You can replace two similar DM8 expansion modules by one appropriate DM16 expansion
module (and vice versa) without having to change the circuit program.
Note
Two DM8 12/24R can be replaced by one DM16 24R only if operated with a power supply of
24 V DC.
Two DM8 24R can be replaced by one DM16 24R only if operated with DC and P action.
Overview: Connecting an expansion module to the LOGO! Base Module
In the following tables, "X" means that the connection is possible; "-" means that the
connection is not possible.
LOGO! Base Module
LOGO! 12/24RCE
LOGO! 230RCE
LOGO! 12/24RC
LOGO! 24
LOGO! 24C
LOGO! 24RC
LOGO! 230RC
LOGO! 12/24RCo
LOGO! 24o
LOGO! 24Co
LOGO! 24RCo
LOGO! 230RCo
36
Expansion modules
DM8 DM8 24, DM 8
12/24R, DM16 24R
DM16 24
24R
x x x
- - -
x x x
x x x
x x x
x x x
- - -
x x x
x x x
x x x
x x x
- - -
DM8 AM2,
230R, AM2 PT100,
DM16 AM2 RTD,
230R AM2 AQ
- x
x x
- x
- x
- x
- x
x x
- x
- x
- x
- x
x x
Manual, 04/2011, A5E03556174-01
CM
x
x
x
x
x
x
x
x
x
x
x
x
LOGO!