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1 control block – Delta Electronics Human Machine Interface DOP-A Series User Manual

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Chapter 5 Control Block and Status Block|ScrEdit Software User Manual

5-2

Revision Apr. 30th, 2007, 2007PDD23000002

The definition for each function and usage of Control Block and Status Block will be introduced in the

following chapters.

5.1 Control Block

HMI can be controlled via PLC by designating the register from control block settings. The register is a

continuous data block and its length is from 0 to 8 WORD’s. The length is different depends on function. For

example, it needs at least 7 WORD’s for recipe function. When the control block size is set to 0, the control

block function is disabled. If the control block function is enabled, HMI can judge the operation that is

commanded by the external controller by reading the setting in the control block rapidly and continuously.

The function and explanation of each WORD are listed below. (In the following table, we assume that the

user uses a Delta PLC, so the available starting addresses in control block are Dn ~ Dn+7 (D0 ~ D7).)

Word Number

Register Number

Example

0

Register for designating Screen Number (SNIR)

Dn

(D0)

1

Control Flag Register (CFR)

Dn+1

(D1)

2

Curve Control Register (CUCR)

Dn+2

(D2)

3

Register for Sampling History Buffer (HBSR)

Dn+3

(D3)

4

Register for Clearing History Buffer (HBCR)

Dn+4

(D4)

5

Recipe Control Register (RECR)

Dn+5

(D5)

6

Register for designating Recipe Number (RBIR)

Dn+6

(D6)

7

System Control Flag Register (SCFR)

Dn+7

(D7)

„

Register for Designating Screen Number (SNIR)

Word

Function

0 Designate

screen

number

This register SNIR (Dn) is used to designate a HMI screen by setting the PLC (D0). An HMI screen can be

switched automatically by changing D0.

„

Control Flag Register (CFR)

Bit Number

Function

0

Enable / disable communication

1

Enable / disable back light

2

Enable / disable buzzer

3

Clear alarm buffer

4

Clear alarm counter

5~7 Reserved

8

Setting user level bit0

9

Setting user level bit1

10

Setting user level bit2

11~15 Reserved

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