Siemens SIMATIC FM 351 - Description of the Encoder Interface

Wiring the FM 351
4-2
FM 351 Positioning Module
C79000-G7076-C351-02
4.1 Description of the Encoder Interface
Location of the Sub-D Connectors
Figure 4-1 shows the location and labeling of the female connectors on the
module. You can connect incremental or absolute encoders (SSI) to the two sub-D
female connectors (see Section 10).
FM 351
X3 CH2
Channel 2
1
15
8
9
1
15
8
9
X2 CH1
Channel 1
Figure 4-1 Location of the Sub–D Connectors X2 and X3
Pinout of the Female Connectors X2 and X3
Pin Name Incr. Encoder (24V) Incr. Encoder (5V) Absolute Encoders
1 A* Encoder signal A --- ---
2 CLS --- --- SSI clock signal
3 CLS --- --- SSI clock signal inv.
4 B* Encoder signal B --- ---
5 DC 24V Encoder power Encoder power Encoder power
6 DC 5.2V --- Encoder power Encoder power
7 M Ground Ground Ground
8 N* Zero marker signal --- ---
9 RE Sourcing/sinking
(see Sec. B.3)
--- ---
10 N --- Zero marker signal ---
11 Z --- Zero marker signal
inv.
---
12 B --- Encoder signal B inv. ---
13 B --- Encoder signal B ---
14 A / DAT --- Encoder signal A inv. SSI data inv.
15 A /DAT --- Encoder signal A SSI data