Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 17)

2-8 SM 04L31A01-01E
Test of Digital Input/Output (not applicable for models CXx0xx)
Digital Input
1. Press the DISP/ENTER key and choose CONTROL and then DI/DO STATUS.
2. The digital input terminals are divided into blocks. Short-circuit between the
common terminal and the terminals, and check the DI status display. The
indicator is green for an open circuit and red for a short circuit.
Digital Output
1. Short-circuit input terminals of all channels and adjust the range and alarm
setting as follows:
Range
Alarm
(Level 1)
Mode
Range
Span
On
Type
Value
Voltage
2 V
–2.000 to 2.000
H
–1.000
2. Prepare the same input terminals step 1, and adjust the alarm relay output as
follows:
Alarm
(Level 1)
Relay Output On
No.
DOxxx and ROxxx
where xxx: digital
output number to test
3. Verify that a digital output turns on using an appropriate tester with the following
circuit:
DO terminal
Common
LED
R
V ≤ 24 V DC
I ≤ 50 mA
Test of Power Supply Voltage Switching
Change the power supply voltage to 240 V AC and verify that the UUT display does not
malfunction.
Note that this test does not apply to the 24 V AC/DC-driven model (option code: /P1).
Test of Ethernet Interface
Use a computer in which the standard software “DAQSTANDARD for CX” is installed
and that has an Ethernet communication function, for the following test.
Run the launcher program. Select Ethernet in the network settings and make the
communication settings. Then, verify that the settings of the UUT, such as the ranges,
can be set up correctly as well as those settings can be read from the computer using
the settings software.
Test of Storage Drive
1. Insert a formatted disk into the drive of the UUT.
2. In the set mode*1, choose Save/Load, Clear data, and then Save settings. Save
the current panel conditions under a desired filename.
3. In the set mode, choose Save/Load, Clear data, and then File list. Verify that the
file saved in step 2 exists in the list.
2.2 Test Procedures