GE HE500TIU100 Apr CH TIU050 GFK-1819 TIU050 Ports, 1 TIU050 Configuration of the RS-485 Port

Switch 1

Switch 2

Switch 3

PAGE 16	06 Apr 2000	CH. 2: TIU050
GFK-1819

2.4TIU050 Ports

Pin 1 TIU050 8-pin Terminal Block Pin 8

Figure 2.2 – Automation Equipment Serial Port

2.4.1TIU050 Configuration of the RS-485 Port

	O F F
	O N
	S W 1
Figure 2.3 – Power Connector	Figure 2.4 – Configuration Bank

Powered by +24VDC and Ground.

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

ON: Pull-up (must be used together with switch 3)

OFF: no Pull-up

ON: 120Ω termination

OFF: no termination

ON: Pull-down (must be used together with switch 1)

OFF: no Pull-down

Switch 4Reserved 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.