JOHNSON CONTROLS
45
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
FORM 155.33-ICOM2.EN.GB
ISSUE DATE:12/4/2017
4
TABLE 11 -
CABLE DIAGRAM (RS-422 OR RS485)
PIN CONNECTION
PIN.
NO.
RS-422 OR 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 Cable Diagrams Without Adaptor
The following are sample cable diagrams for a 2-wire
type connection.
LD21546
FIGURE 15 -
2-WIRE 1:1 CONNECTION WITH USER-CREATED CABLE
