Sony SNT-V304 User Manual
45
RS-232 Serial Interface Terminal Pin Out
1
2
3
4
5
6
7
8
9
• NC = no connection
I/O Terminal Block Connector Pin Out
8
7
6
5
4
3
2
1
A
B
C4
A4
C3
A3
-
-
16
15
14
13
12
11
10
9
RELAY
C2
A2
C1
A1
–
+
Connector width must
not exceed 32 mm.
not exceed 32 mm.
Pin No.
1
2
3
4
5
6
7
8
9
COM1
function
function
NC
-RXD
-TXD
RTS
GND
DSR
RTS
NC
NC
COM2
function
function
CD
-RXD
-TXD
DTR
GND
DSR
RTS
CTS
RI
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Function
Reserved
Reserved
Input 3
Photocoupler
(+)
Photocoupler
(+)
Input 3
Photocoupler
(–)
Photocoupler
(–)
Input 4
Photocoupler
(+)
Photocoupler
(+)
Input 4
Photocoupler
(–)
Photocoupler
(–)
RS-485 B
RS-485 A
Photocoupler
power
power
Input 1
Photocoupler
(+)
Photocoupler
(+)
Input 1
Photocoupler
(–)
Photocoupler
(–)
Input 2
Photocoupler
(+)
Photocoupler
(+)
Input 2
Photocoupler
(–)
Photocoupler
(–)
Relay Switch
Relay Switch
Description
Do not use
Photocoupler input 3: the sash
and contacts are electrically
isolated, so input can be an
external DC voltage or DC power
input/output from pins 9 and 10.
and contacts are electrically
isolated, so input can be an
external DC voltage or DC power
input/output from pins 9 and 10.
Photocoupler input 4: same as
Photocoupler input 3 above.
Photocoupler input 3 above.
An RS-485 (half duplex) interface.
When using, select [RS485] in
[Serial mode]. (Refer to page 18.)
When using, select [RS485] in
[Serial mode]. (Refer to page 18.)
Power for Photocouplers
Photocoupler input 1: same as
Photocoupler input 3 above.
Photocoupler input 3 above.
Photocoupler input 2: same as
Photocoupler input 3 above.
Photocoupler input 3 above.
The relay switch is electrically
isolated from the sash and
connectors.
isolated from the sash and
connectors.