York EX Series - FIGURE 22 - 2-Wire 1:1 Connection with User-Created Cable; TABLE 26 - Cable Diagram (RS-422;RS485)

JOHNSON CONTROLS
73
SECTION 4 - TECHNICAL DATA
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
4
TABLE 26 - CABLE DIAGRAM (RS-422/RS485)
PIN CONNECTION PIN.
NO.
RS-422/RS-485
5
1
9
6
LD20598
SIGNAL NAME DIRECTION MEANING
1 RDA Input Receive Data A (+)
2 RDB Input Receive Data B (-)
3 SDA Output Send Data A (+)
4 ERA Output Data Terminal Ready A (+)
5 SG Signal Ground
6 CSB Input Send Possible B (-)
7 SDB Output Send Data B (-)
8 CSA Input Send Possible A (+)
9 ERB Output Data Terminal Ready B (-)
Shell FG Frame Ground (Common with SG)
2-Wire Type Cable Diagrams
The following is a sample cable diagram for a 2-wire
type connection. It uses a GP4000 series (COM2).
LD20599
LD20599
FIGURE 22 - 2-WIRE 1:1 CONNECTION WITH USER-CREATED CABLE