Sony SNT-V304 User Manual page 46

Basic Specifications
RS-232 Serial Interface Terminal Pin Out
Pin No.
1 2 3 4 5
6 7 8 9
1
2
Connector width must
3
not exceed 32 mm.
4
5
6
7
8
9
• NC = no connection
46
COM1 COM2
function function
NC CD
-RXD -RXD
-TXD -TXD
RTS DTR
GND GND
DSR DSR
RTS RTS
NC CTS
NC RI
I/O Terminal Block Connector Pin Out
- - A3 C3 A4 C4 B A
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
+ – A1 C1 A2 C2 RELAY
Pin Function Description
1 Reserved Do not use
2 Reserved
3 Input 3 Photocoupler input 3: the sash
Photocoupler and contacts are electrically
(+) isolated, so input can be an
external DC voltage or DC power
4 Input 3
input/output from pins 9 and 10.
Photocoupler
(–)
5 Input 4 Photocoupler input 4: same as
Photocoupler Photocoupler input 3 above.
(+)
6 Input 4
Photocoupler
(–)
7 RS-485 B An RS-485 (half duplex) interface.
When using, select [RS485] in
8 RS-485 A
[Serial Mode]. (Refer to page 20.)
9 Photocoupler Power for Photocouplers
power
10
11 Input 1 Photocoupler input 1: same as
Photocoupler Photocoupler input 3 above.
(+)
12 Input 1
Photocoupler
(–)
13 Input 2 Photocoupler input 2: same as
Photocoupler Photocoupler input 3 above.
(+)
14 Input 2
Photocoupler
(–)
15 Relay Switch The relay switch is electrically
isolated from the sash and
16 Relay Switch
connectors.