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