GT10/GT303.4 Setting the Basic Communication Area, GT30 and PLC

Word devices

Word position

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N+0

Screen no. specified by PLC (area read by GT30 from PLC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N+1

Usage prohibited

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N+2

No. of currently displayed screen (area in which data is written from GT30 to PLC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Explanation of system area

Screen no. specified by PLC ––– The screen number displayed on the GT30 is specified from the PLC in hexadecimal format.

No. of currently displayed screen ––– The number of the screen currently displayed on the GT30 is written to the PLC in hexadecimal format.

Bit devices

Word

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

0

position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N+0

BZ

Forced–

Backlight

Backlight

Backlight

 

 

 

 

 

 

 

 

 

 

 

 

display flag

Valid flag

Flashing

Color

 

 

 

 

 

 

 

 

 

 

N+1

Usage prohibited

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N+2

 

 

 

 

 

 

 

 

 

 

 

 

 

BAT

 

Data Input In

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW

BAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

flag

 

Progress flag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Explanation of system areas

BZ ––– This turns on the buzzer.

Forced–Display flag ––– At the rise when the bit is turned on, the screen specified by the PLC is forcibly displayed. (This is executed only when at the rise of the bit.)

Backlight Valid flag ––– When the bit is turned on, the backlight flashing/backlight color control becomes effective.

Backlight Flashing ––– 0: Lighted (normal), 1: Flashing

Backlight Color ––– 00: Off, 01: Lighted, 10: Lighted, 11: Lighted

BAT ––– This goes on if clock data and Hold PLC Device data held in the SRAM are not being backed up normally. (This bit also goes on if the SRAM is not backed up by the battery.)

Data Input In Progress flag ––– This is 1 while data is being input, and 0 when data input has been completed.

BAT LOW flag ––– This bit goes on if the battery capacity drops too low. The battery should be replaced within one week after this bit goes on.

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