Incon 1250B User Manual

6
Table 1.1 Terminal Functions
Terminal
Function
Terminal
Function
A
S1
1
Analog Output +
B
S2
2
Analog Output –
C
S3
3
Program Mode Inhibit
D
(Spare)
4
Inhibit Return
E
R1 *
5
Line L1 *
F
R2 *
6
Line L2 *
7
Chassis Ground
* Terminals E & F are
8
Relay Low Contact N.O.
jumpered to L1 & L2
9
Relay Common
respectively
10
Relay High Contact N.O.
A DIP switch tells the firmware which hardware options are installed, so their function can be
enabled. It is located on the top PCB, above the power transformer and is accessible through
a slot in the left side of the case, towards the rear of the instrument.
Table 1.2 DIP Switch Functions
Switch #
Function
1
ASCII Communication Protocol Enable
2
MODBUS Communication Protocol Enable
3
Spare
4
High / Low Relay Limit Option Enable
5
Analog Output Option Enable
6
Spare
7
Spare
8
Spare
Table 1.3 Digital Communication Connector Pin-Out
1250B
Pin#
DB-9
Pin#
RS-232
Function
RS-485 Comm
Port Adapter Pin #
RS-485
Function
3
2
Transmit (O)
5
Data A(I/O)+
5
3
Receive (I)
4
Data B(I/O) -
7
N/C
RTS (Jumped to CTS)
3
Not Used
9
N/C
CTS (Jumped to RTS)
2
Not Used
13
5
Signal Gnd.
1
Signal Gnd.

Incon 1250B Specifications

General

Brand	Incon
Model	1250B
Category	Measuring Instruments
Language	English