6. DeviceNet COMMUNICATION
IMR01Y36-E2
35
Parameter setting example of Polling I/O communication
An example of how to set each parameter for polling of the following data is shown.
•
Measured data items (IN):
Alarm state
RUN/STOP
state
Measured value (PV)
Manipulated output value (MV) monitor [heat-side]
•
Setting data items (OUT):
Setting state selection
RUN/STOP
transfer
Set value (SV)
Event 1 set value
•
Number of communication controllers:
2 controllers
Z-TIO-A module: 1 controller (4-channel type)
Z-TIO-B module: 1 controller (2-channel type)
•
Number of communication data items:
21 words (IN), 21 words (OUT)
•
Controller address:
1, 2 (Address of controller 1 and controller 2)
•
Automatic acquisition of controller address:
0 (Do not execute the automatic acquisition)
Fixed five communication data words are assigned to the measured data items of Alarm state
and RUN/STOP state. In addition, fixed five communication data words are assigned to the
setting data items of Setting state selection and RUN/STOP transfer.
The number of communication data items can be calculated from the following equation.
Number of communication data items
=
(Number of words of first communication item for one module
1
+
Number of words of next communication item for one module
1
•
•
•
+
Number of words of last communication item for one module
1
)
×
Number of communication controllers
+
Fixed communication date items: 5 words
2
1
In the case of two-channel type (Z-TIO-B modules), the number of the words per one module is
the same as four-channel type (Z-TIO-A modules).
2
Measured data items (IN)
Receive counter: 1 word, Alarm state: 2 words, RUN/STOP state: 2 words
Setting data items (OUT)
Setting state selection: 3 words, RUN/STOP transfer: 2 words
When the number of communication data items is set via Explicit message communication, or
by the configuration tool or rotary switch, the value set by the DIP switch may be ignored.
Fixed assignment
Fixed assignment
