2
-28
Sinking/Sourcing Mode
The multi-function input terminal logic can be switched between sinking mode (0 Vdc common) and sourcing
mode (+24 Vdc common) by using the terminals SN, SC, and SP. An external 24 Vdc power supply is also sup-
ported, providing more freedom in signal input methods.
Table 2.13 Sinking/Sourcing Mode and Input Signals
Internal Power Supply
External Power Supply
Sinking
Mode
Sourcing
Mode
IP24V(+24V)
SN
SC
SP
S1
S2
IP24V(+24V)
SN
SC
SP
S1
S2
Ex24V
IP24V(+24V)
SN
SC
SP
S1
S2
IP24V(+24V)
SN
SC
SP
S1
S2
Ex24V