5.8.6
SINEC L1 Submodule
The SINEC L1 submodule is for use with data transmission via the
SINEC L1 bus.
Application
The SINEC L1 submodule can be inserted in the following CPU:
Interface Submodule... For Use With...
SINEC L1 submodule
CPU 928B, from Version 6ES5 928-3UB12
Circuitry
The SINEC L1 submodule is equipped with a transmitter and a
receiver for 20 mA current loop signals. Shown in the following figure
is the circuitry for the current loop signals:
Data transmission rate
Data transmission via the SINEC L1 interface always takes place at
9600 bps.
Transmitter
-
+
+
-
-
Receiver
Current Direction Arrows
CPU with
Partner
+
Receiver
+
-
Transmitter
SINEC L1
-
+
-
+
Submodule
Figure 5-24
SINEC L1 Submodule: Loop Current Direction
5
Interface Submodule
System Manual
C79000-B8576-C199-03
5 - 91