Delta NANOTRACE DF-745 Instruction Manual Page 36

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32 DF-745 Connecting to External Devices
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 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
The analog voltage output correlating to the front panel display reading is provided on the
rear of the analyzer through connector J4. The full scale voltage 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. The output is
electrically isolated from all other analyzer outputs, and from chassis (Earth) ground. See
page 55 for additional information on setting the Analog Output. The output may be tested
with the use of the analog voltage test routine found on page 59.
6.3 4-20 mA Outputs J4
J4 Pin # Moisture Signal Description
J4-8 GND Ground
J4-7 Key
J4-6 A Out + Analog Voltage Output (+)
J4-5 A Out - Analog Voltage Output (-)
J4-4 Unused
J4-3 Unused
J4-2 4-20 mA + 4-20 mA Output (+)
J4-1 4-20 mA - 4-20 mA Output (-)
Table 4: Pin-Out of Moisture Signal Output Connector J4
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