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5 external input module – Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Installation User Manual

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3.4.5 EXTERNAL INPUT MODULE

The External Input Modules provide the ability to obtain data from other MICRO-DCI

instruments

through the Optional Peer to Peer Communications MicroLink

. The retrieval of a value from a con-

nected instrument and its subsequent storage at a local datapoint is referred to as a task. Up to 24
tasks are supported at an instrument. The following parameters control and indicate the status of
the tasks.

SOURCE:
This parameter specifies the address of the instrument and the datapoint of the value in the remote
instrument to be accessed by the task. The datatype of the SOURCE must be the datatype of the
DESTINATION parameter of each task.
For example: If you access the value of AI2 in instrument 10 the entry would be 10H002.

DESTINATION:
This parameter specifies the local (within instrument) datapoint which is accessed by the task. The
datapoint datatype must match in both SOURCE and DESTINATION parameters of each task.
For example: If you access the value of PV in CON module 1 the entry would be C136.

SCAN:
The rate at which a task is executed is determined by this parameter. The time in seconds (0-255)
at which the task is to be repeated is loaded into this datapoint. A value of 0 stops task execution.

MODE:
This parameter indicates the type of access to be performed by the task.

0 - No access of source or destination
1 - Read from source , write to destination
2 - 255 - Undefined

STATUS:
This parameter indicates whether the last scheduled execution of the task was successfully
completed.

0 - Unsuccessful
1 - Successful

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