Technical data

Chapter 3: Programming and Calibration
(9/00) 3-71
The following diagram shows how to connect the output to the input for both serial ports
and all types of communication.
COM1 and COM3
RS-232
COM1
20 mA
COM2 and COM4
RS-232
COM2 and COM4
RS-422
TxD TxD TxD TxD
RxD RxD RxD RxD
GND GND GND GND
CLTX+ TX+ TX+
CLRX+ TX- TX-
CLRX- RX+ RX+
RX- RX-
+20V +20V
1. Press ESCAPE to exit the serial test when you are finished.
2. Repeat steps 2 and 3 to test additional COM ports.
3. Continue to the next sub-block or exit the setup mode.
6. Parallel I/O Test Sub-
block
The Parallel I/O Test sub-block tests the discrete I/O ports. The test can “turn on” each
output and monitors inputs. See Appendix 2 for more information.
1. When you enter the Parallel I/O test, the !WARNING! message is flashed on the
display four times. The prompt "Are You Sure?" is displayed. Select Y(es) to
continue or N(o) to exit the test.
2. At the Test Par Port prompt, select the desired port to test. The terminal only offers
parallel ports that are physically available on your JAGXTREME terminal.
WARNING!
THIS TEST ALLOWS YOU TO TURN THE OUTPUTS ON AND OFF FROM THE TERMINAL
KEYBOARD. IT IS UNRELATED TO THE WEIGHT. IF ELECTRICAL EQUIPMENT IS
CONNECTED TO THE OUTPUT OF THE JAGXTREME TERMINAL DURING THIS TEST, IT
MAY START AUTOMATICALLY. TAKE ALL APPROPRIATE PRECAUTIONS TO PREVENT
PERSONAL INJURY DURING THIS TEST. METTLER TOLEDO SUGGESTS UNPLUGGING THE
DISCRETE I/O CONNECTOR FROM THE TERMINAL AND USING LEDS OR A VOLT METER
TO VERIFY CORRECT OPERATION OF THESE OUTPUTS.
PAR 1 or PAR 3 (Discrete Input)
The display will read PAR 1 = FFFF or PAR 3 = FFFFFFFF indicating that the four or eight
discrete inputs are all false or “OFF”. When one of the inputs is held to logic ground for
100 ms or longer, the F will change to a T to indicate a true or “ON” condition. When
done, press ESCAPE to exit the test routine for the discrete inputs.
Parallel I/O Test
Test PARx port
PAR1,2,3,4
PN 082523020 LED/SWITCH simulator
is available for testing
PAR 1/PAR 2 from Aftermarket.