Chapter 8. Communication Functions
8-1
Chapter 8. Communication Functions
8.1 Dedicated Protocol Communication
8.1.1 Introduction
GM7U’s built-in Cnet communication is a function to execute a dedicated communication only with a GM7U main unit. That is, it doesn’t
need a separate Cnet I/F module to facilitate the user-intended communication system by utilizing reading or writing of any area in CPU,
and monitoring function. Without additional expanses, the user can use the basic functions like read/write internal device area and
register/execute monitoring with GM7U main unit.
GM7U main unit serves as follows:
•
Individual/continuous reading of device
•
Individual/continuous writing of device
•
Reading CPU status
•
Monitor devices registration
•
Executing monitoring
•
1:1 connection (link between GM7Us) system configuration (GM7U main unit: RS-232C)
GM7U built-in communication function supports Cnet communication without any separate Cnet I/F module. It must
be used under the following instructions.
1)
Channel 0 of GM7U main unit supports 1:1 communication only. For 1:N system having master-slave Format, use RS- 485
communication in channel 1 or GM7U main unit with G7L-CUEC module connected. G7L-CUEC module supports RS-
422/485 protocol.
2)
RS-232C communication cable for GM7U main unit is different from RS-232C cable for GMWIN in pin
arrangement and from the cable for Cnet I/F module, too. The cable can’t be used without any treatment. For the
detailed wiring method, refer to 8.1.2.
3)
Basic items like baud rate type and station no. can be set in GMWIN.
REMARK
Summary of Contents for GLOFA G7M-DR20U
Page 28: ...Chapter 4 Names of Parts 4 3 2 G7M DRT60U N 3 G7M DT60U N 4 G7M DT60U P...
Page 29: ...Chapter 4 Names of Parts 4 4 5 G7M DR60U DC 6 G7M DRT60U N DC 7 G7M DT60U N DC...
Page 31: ...Chapter 4 Names of Parts 4 6 3 G7M DT40U N 4 G7M DT40U P 5 G7M DR40U DC...
Page 32: ...Chapter 4 Names of Parts 4 7 6 G7M DRT40U N DC 7 G7M DT40U N DC 8 G7M DT40U P DC...
Page 33: ...Chapter 4 Names of Parts 4 8 4 1 3 30 point main unit 1 G7M DR30U 2 G7M DRT30U N 3 G7M DT30U N...
Page 34: ...Chapter 4 Names of Parts 4 9 4 G7M DT30U P 5 G7M DR30U DC 6 G7M DRT30U N DC...
Page 36: ...Chapter 4 Names of Parts 4 11 2 G7M DRT20U N 3 G7M DT20U N 4 G7M DT20U P...
Page 37: ...Chapter 4 Names of Parts 4 12 5 G7M DR20U DC 6 G7M DRT20U N DC 7 G7M DT20U N DC...
Page 38: ...Chapter 4 Names of Parts 4 13 8 G7M DT20U P DC...
Page 159: ...Chapter 7 Usage of Various Functions 7 52 c Program...
Page 183: ...Chapter 7 Usage of Various Functions 7 76 c Program...
Page 253: ...Chapter 8 Communication Functions 8 27 b When uses Ch 1 Built in RS 485...
Page 356: ...Appendix 1 System Definitions App1 9 6 Position Parameter...
Page 357: ...Appendix 1 System Definitions App1 10 7 High Speed Counter Parameter...