2

BITS

REGISTER NAME

MODBUS REGISTER

CH. A

CH. B

15

Not Used

-

-

14

Not Used

-

-

13

Not Used

-

-

12

Not Used

-

-

11

Not Used

-

-

10

Not Used

-

-

9

Not Used

-

-

8

Not Used

-

-

7

Not Used

-

-

6

Not Used

-

-

5

Not Used

-

-

4

Not Used

-

-

3

Parameter Read Strobe (See Note 3)

-

-

2

Configuration Read Strobe (See Note 3)

-

-

1

Parameter Write Strobe (See Note 3)

-

-

0

Configuration Write Strobe (See Note 3)

-

-

Table 4 - Control Block for Nx:3 and Nx:7 Flags

Table 6 - Status Block for Nx:10 and Nx:14 Flags

Table 7 - Status Block for Nx:11 and Nx:15 Flags

Table 7

0

1

2

3

6

7

15

15

Table 6

0

1

2

3

4

7..5

15..8

14

40021

Output Power Channel B

13

40017

Process Value Channel B

12

Table 7

0

1

2

3

6

7

15

11

Table 6

0

1

2

3

4

7..5

15..8

10

40005

Output Power Channel A

9

40001

Process Value Channel A

8

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Nx:

REFERENCE/

MODBUS REGISTER

BIT POSITION

Table 5 - Status Block - Channel A and B

BITS

REGISTER NAME

MODBUS REGISTER

CH. A

CH. B

15..8

Input Error Status Register

40504

40504

7..5

Auto-Tune Phase

40012

40028

4

Control Output OP2

40016

40032

3

Control Output OP1

40014

40030

2

Set Point Ramping In Progress

40043

40051

1

Alarm Output AL2

40016

40032

0

Alarm Output AL1

40015

40031

BITS

REGISTER NAME

MODBUS REGISTER

CH. A

CH. B

15

Bus Active (See Note 5)

-

-

14

Not Used

-

-

13

Not Used

-

-

12

Not Used

-

-

11

Not Used

-

-

10

Not Used

-

-

9

Not Used

-

-

8

Not Used

-

-

7

Auto-Tune In Progress (See Note 4)

-

-

6

Auto-Tune Done (See Note 4)

-

-

5

Not Used

-

-

4

Not Used

-

-

3

Parameter Block Read Acknowledge

(See Note 6)

-

-

2

Configuration Block Read Acknowledge

(See Note 6)

-

-

1

Parameter Block Write Acknowledge

(See Note 6)

-

-

0

Configuration Block Write Acknowledge

(See Note 6)

-

-

Status Block

The Status block contains current operating values and status such as Process

Value and Input Status. The DLCD continually writes the Status Block for each

PID channel providing a means whereby the PLC can monitor the operating

status of the DLCD.

Control Block

The Control block contains control values and commands, such as Set Point

and Control Mode. The DLCD continually reads the Control Blocks for each

PID loop from the PLC providing a means whereby the PLC program can

control the DLCD.

Table 2 - Control Block - Channel A and B

Table 3 - Control Block for Nx:2 and Nx:6 Flags

REFERENCE/

MODBUS REGISTER

BIT POSITION

Nx:

15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

0

0 Setpoint Channel A

40002

1 Output Power Channel A

40005

2 15 14 13

7

6..5

1

0 Table 3

3

3

2

1

0 Table 4

4 Setpoint Channel B

40018

5 Output Power Channel B

40021

6 15 14 13

7

6..5

1

0 Table 3

7

3

2

1

0 Table 4

BITS

REGISTER NAME

MODBUS REGISTER

CH. A

CH. B

15

Control Mode

40041

40049

14

Disable Integral Action

40044

40052

13

Disable Setpoint Ramping

40042

40050

12

Not Used

-

-

11

Not Used

-

-

10

Not Used

-

-

9

Not Used

-

-

8

Not Used

-

-

7

Auto-tune Request (See Note 2)

-

-

6..5

Auto-tune Code

40013

40029

4

Not Used

-

-

3

Not Used

-

-

2

Not Used

-

-

1

Alarm Output AL2 (See Note 1)

40016

40032

0

Alarm Output AL1 (See Note 1)

40015

40031