Interface Submodules
13-17
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
13.5.1 Pin Assignments
X1 Socket
Table 13-15 Socket X1, IF 962-LPT (25-Pin Sub D Socket Connector)
Pin Meaning Direction
1 /STROBE Input/output
2Data 0 Input/output
3Data 1 Input/output
4Data 2 Input/output
5Data 3 Input/output
6Data 4 Input/output
7Data 5 Input/output
8Data 6 Input/output
9Data 7 Input/output
10 /ACK Input
11 BUSY Input
12 PE Input
13 SLCT Input
14 /AUTO FEED Output
15 /ERROR Input
16 /RESET Output
17 /SLCT IN Output
18 GND
19 GND
: GND
24 GND
25 GND
Note
Operational ground (GND signal) at the COMa or COMb ports is referenced to
internal ground.
Suitable measures may be required on the process side to avoid ground loops.