York YHAU-CW - TABLE 21 - Cable Diagram (RS422;RS485)

JOHNSON CONTROLS
88
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 4 - TECHNICAL DATA
TABLE 21 - CABLE DIAGRAM (RS422/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)