User`s manual

Chapter 5 - Initializing the GP

GP-477R/577R Series User's Manual

5-18

For example, when these 4 GP units—bit 0, bit 2, bit 3, bit 5—are con-

nected, 002D (h) is written here.

• Be certain to setup this data before running.

• Turn all bits not related to the GP OFF.

• Verification List

This area responds to the correspondence from each connected GP. In the

Verification List, when the same bit numbers as the Connection List turn

ON, the corre spondence is accepted. The Station Numbers of the commu-

nicating GPs turn their corresponding PLC bit number ON.

If the correspondence between the GP and PLC is correct, the same value as

in the Connection List is written to the Verification List.

For example, the value 002D (h) in the Connection List, setup as the 0 bit, 2

bit, 3 bit, and 5 bit, writes to the Verification List.

• When the Connection List and Verification List do not match,

a COMMUNICATION ERROR occurs. Check the setup again.

• When changing the connection, first turn all the bits OFF.

• Even if the GP is connected, if the Connection List is turned

OFF, data transfer cannot occur, and an error will not display.

STATION NO.

This is the setup for the GP Station Number mentioned in the above section.

The setup range is from 0 to 15, and the only other restriction is the GP

STATION NO. must be unique in the system. If STATION NO.'s are repeated, a

COMMUNICATION ERROR occurs.

• The STATION NO. is the number allocated to the particular GP unit. This

number is not related to the Link Unit Machine number.

00000000

0000

00000000

0000

00000000

Bit 15

Bit 0

Note:

Important

1111

Connection List 002D (h)

Connection List

Verification List

002D (h)