PAGE 16 06 Apr 2000 CH. 2: TIU050
GFK-1819
2.4 TIU050 Ports
2.4.1 TIU050 Configuration of the RS-485 Port
The configuration bank (shown in Figure 2.5) sets the parameters of the RS-485 port as described in
Table 2.1.
Table 2.1 – Configuration Bank
Switch 1 ON: Pull-up (must be used together with switch 3)
OFF: no Pull-up
Switch 2 ON: 120Ω termination
OFF: no termination
Switch 3 ON: Pull-down (must be used together with switch 1)
OFF: no Pull-down
Switch 4 Reserved for future use
NOTE: Switch 1 and 3 must be used together. Either both pull-up and pull-down are
used or neither is used.
Figure 2.3 – Power Connector
Powered by +24VDC and Ground. Figure 2.4 – Configuration Bank

OFF

ON

SW1
F
igure 2.2 – Automation Equipment Serial Port
Pin 1
P
in 8TIU050 8-pin Terminal Block