Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 40)

1-28
IM 04L31A01-01E
Note
• For a description on how to register contact inputs, see “Setup Items” of section 4.2,
“Basic Control Settings > Contact Input Registration/Misc.”
• On models with the measurement alarm option terminal block /A6R or /A4FR, the actions from
“Start/stop” to “Snapshot” can also be assigned to the measurement remote input. For a
description on the assignment of actions to the measurement remote input, see “Measurement
Remote Input” on
page 1-103 .
• If the same action is performed using keys of the CX2000, communications, and contact
input, the newest operation/input is valid regardless of the method. This is also true
between contact inputs and measurement remote inputs.
• If a program start trigger activates through contact input during program hold, hold mode is
cleared.
Contact Output (FAIL Output, Self Diagnosis Output, and Event Output)
Output Terminal Selection
The control output terminal block allows 6 contact inputs; the control DIO expansion terminal
block allows 12 contact inputs. The following contact output numbers are used in the settings.
Contact output of loop 1 and 2 control output terminal block: DO001 to DO006
Contact output of loop 3 and 4 control output terminal block: DO101 to DO106
Contact output of loop 5 and 6 control output terminal block: DO201 to DO206
Contact output of the control DIO expansion terminal block: RO001 to RO012
Setting the Relay Action/Hold
Set whether to energize or de-energize the output relay when outputting failure detection
found by FAIL or self diagnosis and events. In addition, set whether the relay output is
turned OFF when the condition is appropriate for releasing the output, or hold the relay
output until an alarm ACK operation is carried out. In the settings, select the behavior
from “deenergize/hold,” “deenergize/nonhold,” “energize/hold,” and “energize/non-hold.”
In the case of a transistor (open-collector) output, the signal is switched from Off to On
during output for an energize setting and from On to Off during output for a de-energize
setting. These relay actions are the same as the alarm output relay actions of the
measurement function. For details on energize/de-energize and hold/nonhold, see
“Energized/De-energized Operation of Alarm Output Relays” and “Hold/Non-hold
Operation of Alarm Output Relays” on page 1-66.
FAIL Output
This is the setting for the function that outputs a relay contact signal when a failure is
detected in the CX2000 CPU. When FAIL output is turned ON, “DO001” of the loop 1
and 2 control output terminal block is automatically assigned to “de-energized/hon-hold.”
Fault Diagnosis Output
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 fault diagnosis output is turned ON, “DO002” of the loop 1 and 2 control output
terminal block is automatically assigned to “de-energized/hon-hold.”
Event Output
On models with the program control option, PV events and time events can be assigned
to contact outputs. You can select the output terminal for PV events and time events
from DO001 to DO006, DO101 to DO106, DO201 to DO206, RO001 to RO012, and
SW001 to SW036.
Note
• If [Diagnostics] or [FAIL] using the [Basic Control Settings] > [#4 Relay Related] command
sequence is set to ON, the DO001 or DO002 output from the control output terminal block
for loops 1 and 2 is set for dedicated FAIL output or Diagnostics output. In this case,
control alarms can be assigned to [DO001] or [DO002], but the setting is disabled.
• You can specify the internal switches (SW01-SW36) as the event output destination (style
number S3 or later).
1.5 Contact Input/Output Related Settings