Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 174)

4-14
IM 04L31A01-01E
Setup Items
Setting Relay-Related Parameters
• Module
Select the terminal block for setting the contact output from list shown below. The
contact output numbers displayed in the [Relay(Action/Behavior)] area vary
depending on the selected terminal block as follows:
CTRL1-2 (control output terminal block 1): DO001 to DO006
CTRL3-4 (control output terminal block 2): DO101 to DO106
CTRL5-6 (control output terminal block 3): DO201 to DO206
EXTDIO (control DIO expansion terminal block): RO001 to RO012
Note
The contact output is output from the terminal indicated as [DIGITAL OUT] on the seal on the
front of the terminal cover. For the relationship between the contact output numbers and the
[DIGITAL OUT] terminals of each terminal block, see page 2-6 .
• FAIL
This is the setting for the function that outputs a relay contact signal (FAIL signal)
when a failure is detected in the CX2000 CPU. When set to [On] (initial setting is Off),
“DO001” of control output terminal block 1 is automatically assigned to “de_energize/
Nonhold.”
Note
For the option terminal block with the FAIL output terminal (“/A4F” or “/A4FR” option), the
FAIL signal is output from the FAIL output terminal of the option terminal block regardless of
this setting.
• Self diagnosis
This is the setting for the function that outputs a relay contact signal when an input
burnout, A/D converter failure, or reference junction compensation failure occurs.
When set to [On] (initial setting is Off), “DO002” of control output terminal block 1 is
automatically assigned to “de_energize/Nonhold.”
• Relay (Action/Behavior)
Select the relay action type of each contact output from the following:
De_energize/hold, De_energize/Nonhold, Energize/Hold, and Energize/Nonhold
Note
The behavior of the transistor (open-collector) output corresponding to the energize/
deenergize setting of the relay action is as follows:
When set to deenergize: Switch from high to low during output
When set to energize: Switch from low to high during output
4.4 Control > Relay