Chapter 4: Output and Alarm Function Configuration
DTM temperature controller operating manual
Note: x indicates internal station number.
Example: As shown in the figure below, if it is wished to assign the [output 2 of input channel 1] of the
measurement expansion module at internal station 2 to [channel 1] of the I/O expansion module of internal
station 4, write the content of [H0040] to address [H2198]. Bit7~4: station number; Bit3~0: channel location.
Figure – Schematic diagram of assignment of I/O expansion module locations
Notes:
1. The DTM host and measurement expansion modules come with 8 physical output points (install two expansion
cassettes) that can be assigned for use by control output 1.
2. Outputs must have an accompanying input; when the input has no signal, the output will have no action.
4.3 Alarm Functions
Each channel in this device can have 3 alarm outputs.
The 17 alarm modes shown in the table below can be set independently, and alarm delays and 4 alarm
functions—standby, output reverse, hold, and record peak—can also be set.
4.3.1 Explanation of Alarm Functions
A. Alarm delay: If setting alarm delay time, when an action complies with the set alarm mode, the
controller will delay generation of an alarm signal, and will generate an alarm only after confirming
that alarm conditions continue to apply during the delay period
B. alarm functions - standby: In order to prevent the alarm from being activated when power is turned
on, alarms will be triggered only when the present value (PV) is within ±1 increment (temperature:
0.1°C) of the set-point value (SV)
C. Alarm functions - output reverse: The initial state of relay contact is normal open (NO). After
activating this function, alarms will be changed to normal closed (NC), and will be returned to an
normal open state(NO) if power is cut off to the machine
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