Chapter 8. Communication Function
8-67
Item
Settings
Station No.
Set a number between 1 to 31 (Don’t assign no. 0 as broadcasting station lest it may be a cause
for mistaken operation)
Baud rate
Set one from 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bps.
Data bit
Set 7 or 8.
ASCII mode: Set as 7 bits.
RTU mode: Set as 8 bits.
Parity bit
Set as one of None, Even, or Odd.
Stop bit
Set 1 or 2 bit(s).
When parity bit is set: Set as 1 bit.
When parity bit isn’t set: Set as 2 bits.
Communication
channel
z
RS-232C Null Modem or RS-422/485: It’s a communication channel for the communication,
using GM7U main unit’s built-in communication and Cnet I/F module (G7L-CUEC).
z
RS232C Modem (Dedicated Line): It’s to be selected for the communication, using an
dedicated modem with Cnet I/F module (G7L-CUEB).
z
RS232C Dial Up Modem: It’s to be selected for the general communication connecting
through the telephone line by dial up modem and Cnet I/F module (G7L-CUEB).
Footnote) Using Cnet I/F module (G7L-CUEB) supporting RS232C, RS232C dedicated or dial-up
modem communication can be done, but not through Cnet I/F module (G7L-CUEC)
supporting RS422/485.
Timeout in master
mode
z
It’s the time waiting a responding frame since the master GM7U main unit sends a request
frame.
z
The default value is 500ms.
z
It must be set in consideration of the max. periodical time for sending/receiving of the
master PLC.
z
If it’s set smaller than the max. send/receive periodical time, it may cause communication
error.
Modbus Master/
Slave
If it is set as the master, it’s the subject in the communication system. If it’s set as the slave, it only
responds to the request frame of the master.
Transmission mode Select ASCII mode or RTU mode.
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...