Servomex NanoTrace DF-760E, Instruction Manual

Page: 46 / 182

42 DF-760E Connecting to External Devices
See the chapter on Communications on page 113 for additional information on setting unit
ID’s and baud rates.
A program to facilitate serial communications is available from Delta F.
Pin # Signal Description
J5-8 GND Ground
J5-7 TX- 4 wired 485 paired with TX+
J5-6 Key Unused
J5-5 RX- 4 wire 485 paired with RX+
J5-4 Unused
J5-3 Unused
J5-2 TX+ Data transmitted by the analyzer via RS-232 or RS-485
J5-1 RX+ Data received by the analyzer via RS-232 or RS-485
Table 2: Pin-out of Serial Comm Connector J5
Pin assignments
DF-760/750
Connector J5
PC-DB9/RS-232 PC-DB25 / RS-232
PC/RS-485
converter
1 : RX+ 3 : TD 2 : TD TX+
2 : TX+ 2 : RD 3 : RD RX+
8 : Gnd 5 : Gnd 7 : Gnd
5: RX- TX-
7: TX- RX-
Table 3: Serial Communications Connections
6.2
Analog Signal Outputs – J4, J10
Two sets of analog voltage outputs correlating to the front panel display readings are
provided on the rear of the analyzer. The analog voltage output for the oxygen signal is
provided through connector J10. The analog voltage output for the moisture signal is
provided through connector J4. The full scale voltage for each is set at the factory at the
time of order to: 0 to 1 VDC, 0 to 2 VDC, 0 to 5 VDC, or 0 to 10 VDC. These outputs are
electrically isolated from all other analyzer outputs, and from chassis (Earth) ground. See
page 65 and page 97 for additional information on setting the Moisture and Oxygen
Analog Outputs. These outputs may be tested with the use of the analog voltage test
routine found on page 111.
6.3
4-20 mA Outputs – J4, J10
Two sets of 4-20 mA analog outputs correlating to the front panel display readings are
provided on the rear of the analyzer. The 4-20 mA output for the oxygen signal is provided
through connector J10. The 4-20 mA output for moisture is provided through connector
J4. These outputs are electrically isolated from all other analyzer outputs, and from chassis
(Earth) ground.