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13.26.6 General PLC Control
This control is used to trigger data transfer to and from the PLC. A Read address word is specified for the control. This object
requires five or more words. The action performed is based on the value in the Read address as follows:
Read address value
Action
1
Data is transferred from the PLC to HMI RW memory locations.
2
Data is transferred from the PLC to HMI LW memory locations.
3
Data is transferred from HMI RW locations to the PLC.
4
Data is transferred from HMI LW locations to the PLC.
Note:
Once the operation is finished, the Read Address is set to 0.
Control Word Assignments
Read address value
Action
Read a 1
The number of words (
N
) to transfer (Maximum 32).
Read a 2
The offset in the PLC of the starting address for transfers.
Read a 3
The offset of the starting addresses for LW and RW transfers.
Read a 4 +N
The beginning of the data for transfer and N words following
13.26.6 Execute macro program
Executes the Macro specified in the Macro ID field when the Read address turns ON (positive edge triggered). This is the
only way to execute macros. Refer to the Macro Reference Section for more details about Macro creation and editing.
13.27 Event Log
Event Log Messages are displayed on the Event Display Part. The message to be displayed on the Event Display
must first be registered in the Event Log list. A bit or word device controls each message. If the bit or word device
activates (either ON/OFF or value limit), the corresponding message is displayed in the Event Display. By default,
events are stored in non-retentive memory and are lost when power is cycled to the unit. To retain events, activate the
System Parameters, Hardware tab setting that stores events in retentive memory. Events stored there remain even when
power is cycled.
Procedure to add/modify Event Log messages.
1. Click Event Log Tool or select
PLC
Control
from the
Parts
menu to display
the Event Log message summary screen.
2. Select the
Add
button to add a new
message. Click on
Setting ….
button to
edit an existing message. Use
Delete
to
remove a highlighted message.
Note:
There is no Undo operation
for the Delete command.
Summary of Contents for MMI-1500
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