Yokogawa PC-Based MX100 - Manual (Page 45)

1-36 IM MX100-01E
1.12 Functions of the 10-CH, Medium-Speed Digital
Output Module
This module outputs ten contact signals based on the alarm output settings and output
settings on the PC software.
Output terminal (clamp terminal)
Terminal cover
Output Type
The MX100 has the following types (output factors) are available.
Type Description Relay Action
Output Hold
Behavior
Alarm
Alarm output of measurement /
computation channels
Energize or deenergize
selectable
Hold *2 or non-hold
selectable
Manual
Manual DO operation using the
software
Energize or deenergize
selectable
Fail
When a failure occurs in the
CPU of the MX100 main module
Normal: Energized
Failure: Deenergized
Error
Output when an error *1 is
detected in the MX100
Energize or deenergize
selectable
Hold *2 or non-hold
selectable
*1 Below are the errors that can occur in the MX100.
• A data output request timeout (60 s) occurs while recording data. (except when the /DS
option functions are enabled)
• An input module detected at power-on that is able to make measurements is removed.
• A module breaks down.
• An unidentifiable module is attached.
*2 Holds the output until the PC software issues the output release command (relay ACK).
Output Update Interval
The output is updated every 100 ms (minimum). It is not synchronized to the
measurement interval.
Relay Action and Hold Behavior
You can select whether to energize or de-energize the output relay when outputting
contact signals on the PC software. You can also select whether the output relay is
turned OFF (non-hold) or kept ON (hold) until an output release command is received.
Output cause
occurrence
• When set to non-hold • When set to hold
Relay output ON
Relay output OFF
Relay ACK
Relay output ON
Relay output OFF
Output cause
occurrence