IDEC WindO/I-NV4 User Manual page 145

■ Type
Select the type of communication command from the following items.
TXD: A command for data transmission from the MICRO/I to an external device.
MICRO/I
Processing of transmission command is as follows.
Example: When Trigger Type in Trigger Condition is Rising-edge, Device Address is LM100 and
Completed Device Address is LM101
When the value of the Trigger Condition device address LM100 changes to 1, data is
transmitted by user communication from the MICRO/I to the external device. When data
transmission is successfully completed, the value of the Completed Device Address LM101
changes to 1.
Value of Device Address LM100 when
Trigger Condition is
Value of Completed Device Address
RXD: A command for analyzing and processing data received by the MICRO/I from an external device.
MICRO/I
Processing of receive command is as follows.
Example: When Trigger Type in Trigger Condition is While ON, Device Address is LM100 and
Completed Device Address is LM101
When the value of the Trigger Condition device address LM100 changes to 1, data can be
received (ready to receive) by user communication, so when data is transmitted from the
external device, the MICRO/I starts to receive the data. When data receiving is successfully
completed, the value of the Completed Device Address LM101 changes to 1.
Value of Device Address LM100 when
Trigger Condition is
Value of Completed Device Address
External device
Transmission
Transmission
data
1 2 3 4
(31h) (32h) (33h) (34h)
State in which user
communication is
transmitted by user communication
not operating
Start
transmission
Transmission data
1
0
Rising-edge
1
LM101
0
Receive Receive data
1 2 3 4
(31h) (32h) (33h) (34h)
State in which user
communication is
received by user communication
not operating
Data transmission from
external device
Start
receiving
1
0
While ON
1
LM101
0
WindO/I-NV4 User's Manual
State in which data can be
Complete
transmission
External device
State in which data can be
Complete
receiving
Receive data
5 User Communication
State in which user
communication is
not operating
State in which user
communication is
not operating
3-37
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