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Register 2: B1=1, B0=0 Register 3: B1=1, B0=1

I/O modules • 147

Digital Outputs 750-511

Parameterizing the registers:

The PLC can read and set the registers via the control and status byte and the output bytes in the process image.

Control byte:

Bit

B7

B6

 

B5

B4

B3

B2

B1

B0

 

 

 

 

 

 

 

 

 

Meaning

REG

W/R

 

0

0

0

0

A1

A0

Status byte:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

B7

B6

 

B5

B4

B3

B2

B1

B0

 

 

 

 

 

 

 

 

 

Meaning

REG

0

 

0

0

0

0

A1

A0

REG = 0 Process data exchange

REG = 1 Access to the registers

W/R = 0 Register read mode

W/R = 1 Register write mode

A1..A0 Register address

The output bytes of channel are used for the register values.

Examples for the pulse width bus module 750-511

The following examples illustrate the register read and write modes. The values are binary. In order to make things easier, only the process data of channel 1 is mentioned.

Register 2 read mode

The module is in process date exchange:

Control byte

Output byte 1

Output byte 0

0xxx xxxx

xxxx xxxx

xxxx xxxx

 

 

 

 

Status byte

 

Input byte 1

Input byte 0

 

 

 

 

0xxx xxxx

 

0000 0000

0000 0000

Register read access is available when bit 7 is set and the register address is entered in the control byte.

Control byte

Output byte

1

Output byte 0

1000 0010

Xxxx xxxx

 

xxxx xxxxx

Modular I/O System

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148 • I/O modules

Digital Outputs 750-511

Status byte

Input byte 1

Input byte 0

Comment

0xxx xxxx

Xxxx xxxx

xxxx xxxx

Running processing

 

 

 

 

1000 0010

0000 1111

1010 0000

Value out of register 2:

4.000 µs (250 Hz) (0x0FA0)

You can reactivate the process data exchange if you erase bit 7.

Control byte

Output byte

1

Output byte 0

0xxx xxxx

Xxxx xxxx

 

xxxx xxxxx

 

 

 

 

Status byte

Input byte 1

Input byte 0

Comment

1000 0010

0000 1111

1010 0000

Value out of register 2

 

 

 

 

0xxx xxxx

0000 0000

0000 0000

Process data exchange

 

 

 

 

Register 2 write mode

The module is in process data exchange mode:

Control byte

Output byte 1

Output byte 0

0xxx xxxx

xxxx xxxx

xxxx xxxx

 

 

 

Status byte

Input byte 1

Input byte 0

0xxx xxxx

0000 0000

0000 0000

 

 

 

Register write access is available by setting bit 7 and bit 6 and entering the register address in the control byte.

Control byte

Output byte 1

Output byte 0

Comment

1100 0010

0000 0100

0001 1101

Value in register 2:

 

 

 

1.053 µs (950 Hz)

 

 

 

(0x041D)

 

 

 

 

Status byte

 

Input byte 1

Input byte 0

Comment

 

 

 

 

 

0xxx xxxx

 

xxxx xxxx

xxxx xxxx

Running processing

 

 

 

 

 

1000 0010

0000 0000

0000 0000

Acknowledgement

 

 

 

 

 

Modular I/O System

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I/O modules • 149

Digital Outputs 750-511

You can reactivate the process data exchange if you erase bit 7.

Control byte

Output byte 1

Output byte 0

0xxx xxxx

xxxx xxxx

Xxxx xxxxx

 

 

 

Status byte

Input byte 1

Input byte 0

Comment

1000 0010

0000 0000

0000 0000

Value out of register 2

 

 

 

 

0xxx xxxx

0000 0000

0000 0000

Process data exchange

 

 

 

 

Organization of the inand output data:

Attention

For the process data configuration of these bus modules please refer to chapter "Process data architecture for MODBUS/TCP" in the process image description of the corresponding coupler/controller.

Modular I/O System

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150 • I/O modules

Digital Outputs 750-512

4.3.1.1.7 Digital Output Relay

(2 normally open contacts non-floating, AC 250 V) 750-512

Status

13

14

 

 

Relay 1

A

 

 

C

 

B

 

 

 

D

 

13

14

DO 1

 

 

 

L

L

 

0V

0V

 

750-512

Status

Relay 2

Data contacts

DO 2

AC 230 V

DC 30 V

N

0 V

Power jumper contacts

Technical description

The power supply for the relay coils is not made through the power jumper contacts but directly from the electronics. The respective output contacts of the switching element are therefore always positioned at the field side.

The power supply is made via a series-connected supply terminal block for the respective operating voltage. Power connections are made automatically from module to module when snapped onto the DIN rail. One termination point of these contacts must be directly connected to the power supply.

The output module can operate with all buscouplers of the

WAGO-I/O-SYSTEM.

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I/O modules • 151

Digital Outputs 750-512

Technical Data:

Item-No.:

Number of outputs

Input current (internal)

Switching voltage Relay

Switching power Relay

Switching current Relay

Isolation

Internal bit width

Configuration

Operating temperature

Wire connection

Dimensions (mm) WxHxL

750-512

2 normally open contacts

100 mA max.

AC 250 V / DC 30 V

500 VA / 60 W, cos ρ =0.4, L/Rmax=7 ms

max

AC/DC 2 A

4 kV System/power supply

2

without address or configuration adjustment

0 °C ... + 55 °C

CAGE CLAMP ; 0.08 mm2 - 2.5 mm2, AWG 28 – 14, 8 – 9 mm Stripped length

12 x 64* x 100 (from upper edge of carrier rail)

Modular I/O System

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