Table of Contents
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CONTENTS
4-3
Using Protocol Macros.......................................................................................................... 4-40
4-3-1
Executing Communications Sequences.................................................................................... 4-40
4-3-2
User Program Example............................................................................................................. 4-42
Section 5
5-1
Serial Gateway Overview ........................................................................................................ 5-2
5-1-1
Overview ..................................................................................................................................... 5-2
5-1-2
Operating Conditions .................................................................................................................. 5-2
5-1-3
Features ...................................................................................................................................... 5-3
5-1-4
Serial Gateway Specifications..................................................................................................... 5-4
5-2
(During Serial Gateway Mode)................................................................................................ 5-5
5-2-1
Device Variables for CJ-series Unit for System Settings............................................................. 5-5
5-2-2
System-defined Variable ............................................................................................................. 5-8
5-2-3
Device Variable for CJ-series Unit for Software Switches ........................................................... 5-9
5-2-4
Device Variable for CJ-series Unit for Status .............................................................................. 5-9
5-3
Using the Serial Gateway...................................................................................................... 5-12
5-3-1
Setting Device Variable for CJ-series Unit for System Settings and Software Switches........... 5-12
5-3-2
Sending Messages Using the SendCmd Instruction................................................................. 5-14
5-3-3
Using the Serial Gateway Function When Protocol Macros Are Executed ............................... 5-15
5-4
Protocol Conversion.............................................................................................................. 5-22
5-4-1
Types of Protocol Conversion.................................................................................................... 5-22
5-4-2
Converting to CompoWay/F ...................................................................................................... 5-23
5-4-3
CompoWay/F Connection Examples ........................................................................................ 5-25
5-4-4
Converting to Modbus-RTU....................................................................................................... 5-26
5-4-5
Converting to Modbus-ASCII .................................................................................................... 5-28
5-5
Serial Gateway ....................................................................................................................... 5-29
5-5-1
Serial Gateway Execution Timing for Protocol Macros ............................................................. 5-29
5-5-2
Serial Gateway Timeout Monitoring .......................................................................................... 5-31
5-5-3
Other Functions......................................................................................................................... 5-32
5-6
Communications Frames...................................................................................................... 5-33
5-6-1
CompoWay/F ............................................................................................................................ 5-33
5-6-2
Modbus-RTU ............................................................................................................................. 5-34
5-6-3
Modbus-ASCII........................................................................................................................... 5-36
Section 6
6-1
Overview................................................................................................................................... 6-2
6-1-1
Definition ..................................................................................................................................... 6-2
6-1-2
Specifications .............................................................................................................................. 6-3
6-1-3
Connections for No-protocol Mode ............................................................................................. 6-4
6-2
6-2-1
Device Variables for CJ-Series Unit for System Settings ............................................................ 6-5
6-2-2
System-defined Variable ............................................................................................................. 6-8
6-2-3
Device Variable for CJ-series Unit for Software Switches ........................................................... 6-8
6-2-4
Device Variable for CJ-series Unit for Status .............................................................................. 6-8
6-2-5
with SerialSend, SerialRcv, or SerialRcvNoClear Instruction) .................................................. 6-11
6-3
Using Serial Port I/O Instructions ........................................................................................ 6-12
6-3-1
System Settings ........................................................................................................................ 6-12
6-3-2
Instruction Execution Methods .................................................................................................. 6-12
12
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
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