User's Manual

3133501
18-Pin Circular Weathertight Connector
An 18-pin circular connector is used for monitoring the alarm C-Form relay. Only some of the
pins are used, but the same connector is used to maintain consistency with the protection switch used in
the AnaSat
®
product line.
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
8
18
17
16
15
14
13
12
11
10
9
7
8
6
5
4
3
2
1
Cable Wire View
Cable End View
Pin Signal Description
4 NO Alarm Normally Open
5 NC Alarm Normally Closed
6 C Alarm Common
7 P13V +13V CD Power (powers protection switch)
8 TX+ Differential Transmit Data (RS485)
9 TX- Differential Transmit Data (RS485)
10 RX+ Differential Transmit Data (RS485)
11 RX- Differential Transmit Data (RS485)
12 RS485 Grounded for RS485 operation
13 TXMUTE Grounded to mute transmit function
16 RXD Receive Data (RS232)
17 TXD Transmit Data (RS232)
18 GND Ground
Note dimple next to Pin 1
F
igure 11 - 18 pin weather-tight connector
The Cable End View refers to looking into the end of the connecting cable; the Cable Wire View
refers to looking into the connector on the SSPA.
RS485/RS232 Selection
Pin 12 on the 18-pin weathertight circular connector is the RS485/RS232 mode select jumper pin.
Connect pin 12 to ground (pin 18) for RS485 operation. Leave open for RS232 operation. This has no
effect on the other serial port (if installed.)
ANACOM AnaSat
®
SSPA 21