13.2 Block Diagram; Block Diagram Of The 1Count40Khz Counter Module - Siemens Metro 21 M216KA Operator's Manual

13.2 Block Diagram

SC bus
L+, M jumpered via terminal block
Figure 13-2 Block Diagram of the 1COUNT40kHz Counter Module
Abbreviations
Used
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
Galvanic
isolation
Logic
and
interface
circuit
Internal
supply
1L+, 2L+
1A = count input
3B = direction input
4M = load voltage brought out (neg. potential)
2L+ = load voltage brought out (pos. potential)
The 1COUNT40kHz Counter Module
1 A
3 B
4 M
2 L+
1M, 2M
13-3