Varec TankGate Interface 8315 Series - Manual (Page 23)

8315 TGI Hardware
Varec, Inc. 13
For RS-485, set the Hardware Handshaking Switch SW1 to the ‘A’ position. Refer to the following
table:.
Table 2-1: Tank Gate Interface Communications Cable
The layout for the RS-232 cable between the PC and the Tank Gate Interface is shown in the
following illustrations.
Comm.
Physical
Layer Hardware
Handshake SW1
Setting SW2
Setting Notes
RS-232 No A UP (towards the
RS-232 side)
Use with a PC. Signals at terminal block J5 will
be RS-232
RS-232 Yes B UP (towards the
RS-232 side)
Use to communicate to systems that require
Request To Send (RTS) in order to transmit
(Modems, Radios, etc.)
RTS and CTS signals will be available at
terminal block J6
RS-485 Yes A DOWN (towards
the RS-485
side)
Always SW1 set to the A position when using
RS-485..