9
6609-2202
CH1: RS-422/485 Connections (Upper left screw terminal)
5
4
3
2
1
Terminal
Signal Name*
Number
Marked
According
on ED-10
to Standard
Direction**
Description
1
SG
–
–
Not connected
2
T–
B
Out/In
RS422/485 4-wire Transmitter /
RS485 2-wire T– and R–
3
T+
A
Out/In
RS422/485 4-wire Transmitter /
RS485 2-wire T+ and R+
4
R–
B’
In
RS422/485 4-wire Receiver
5
R+
A’
In
RS422/485 4-wire Receiver
* Numbered right to left (front view).
** Direction relative ED-10.
Twisted pair cable is recommended
CH2: RS-232 Connections (D-sub connector), DCE
5
4
3
2
1
9
8
7
6
Pin
Signal Name*
Number Description
V.24
RS-232C
Direction**
Description
1
DCD
109
CF
–
Data Carrier Detect, not connected
2
RD
104
BB
Out
Received Data
3
TD
103
BA
In
Transmitted Data
4
DTR
108.2
CD
–
Data Terminal Ready, not connected
5
SG
102
AB
In/out
Signal Ground
6
DSR
107
CC
–
Data Set Ready, not connected
7
RTS
105
CA
In
Request to Send, not used
8
CTS
106
CB
Out
Clear to Send, not used
9
RI
125
CE
–
Ring Indicator, not connected
* Functionality might differ from standard, see chapter 6.4
** Direction relative ED-10.
RS-232 cable must not exceed 15 m
5
4
3
2
1
4-wire
5
4
3
2
1
2-wire
