S5-95U, Second Serial Interface Computer Link with 3964(R) Transmission Protocol
3.1 Connection of Communication Partners in a Computer Link
The communication partners are linked via a direct cable. Use a 4-core, shielded cable with a cross-
section of at least 0.14 mm
2
. We recommend the 707-1 bus cable (Order number Appendix D).
Linking the S5-95U (TTY active) with any communication partner (TTY passive)
Cable length: < 100 m
Figure 3-2 Pin Assignments S5-95U (TTY Active) - any Communication Partner
(TTY Passive)
GND (1) (8) GND
20 mA (13)
TTY IN+ (9)
S5-95U Communication partner
TTY IN - (2) TTY OUT+
(12) TTY OUT -
(15)
TTY OUT+ (6) TTY IN -
TTY OUT - (7)
20 mA (11) TTY IN+
Ground
Ground
+
+
Note
If wiring is incorrect, the SI2 interface can be destroyed.
EWA 4NEB 812 6095-02
3-3
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