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350
Serial Communications
Section 6-3
Auxiliary Area Flags
and Bits
The Modbus-RTU command set in the DM fixed allocation words for the Mod-
bus-RTU Easy Master is automatically sent when the Modbus-RTU Master
Execution Bit is turned ON. The results (normal or error) will be given in corre-
sponding flags.
6-3-4
Communications: Smart Active Parts and Function Blocks
Overview
OMRON components that support CompoWay/F communications or Modbus-
RTU slave functionality (such as Temperature Controllers) can be easily
accessed from a CP1L CPU Unit equipped with an RS-422A/485 or RS-232C
Option Board using Smart Active Parts (SAPs) on an NS-series PT or using
function blocks in the ladder program in the CP1L CPU Unit.
The communications mode in the PLC Setup must be set to the Gateway
Mode to enable this functionality.
Note
Function blocks cannot be used in the CP1L-J CPU Unit.
System Configuration
Word
Bit
Port
Contents
A640
00
M-type
CPU
Units:
Serial
port 2
L-type
CPU
Units:
Serial
port 1
Modbus-RTU Master Execution Bit
Turned ON: Execution started
ON: Execution in progress.
OFF: Not executed or execution completed.
01
Modbus-RTU Master Execution Normal Flag
ON: Execution normal.
OFF: Execution error or still in progress.
02
Modbus-RTU Master Execution Error Flag
ON: Execution error.
OFF: Execution normal or still in progress.
A641
00
M-type
CPU
Unit:
Serial
port 1
Modbus-RTU Master Execution Bit
Turned ON: Execution started
ON: Execution in progress.
OFF: Not executed or execution completed.
01
Modbus-RTU Master Execution Normal Flag
ON: Execution normal.
OFF: Execution error or still in progress.
02
Modbus-RTU Master Execution Error Flag
ON: Execution error.
OFF: Execution normal or still in progress.
Using SAPs from an NS-series PT
Using Function Blocks in CPU Unit
OMRON components that support CompoWay/F or
Modbus-RTU slave functionality
NS-series PT
Smart Active Parts
RS-232C
XW2Z-200T/500T Cable
CP1L CPU Unit
RS-422A/485 Option Board
RS-232C Option Board
CPU Unit functions as a gateway
RS-422A/485 (CompoWay/F or Modbus-RTU)
OMRON components that support CompoWay/F or Modbus-
RTU slave functionality
FB
User program
Function block
CP1L CPU Unit
RS-422A/485 Option Board
RS-422A/485 (CompoWay/F or Modbus-RTU)
Содержание CP1L - 12-2007
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Страница 13: ...xiv TABLE OF CONTENTS...
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Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 428: ...395 Clock Section 6 9...
Страница 429: ...396 Clock Section 6 9...
Страница 523: ...488 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...496 Replacing User serviceable Parts Section 10 2...
Страница 563: ...528 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...576 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...603 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...604 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...634 Index...
Страница 671: ...636 Revision History...