How is the communication between Siemens PLCs done?

Siemens PLC transmission instructions are mainly divided into two categories, one is single transmission, and the other is block transmission

1. Single transmission:

1) movb, byte transfer instruction;

2) BIR, transmit bytes to read the instruction immediately;

3) BIW, send bytes to write instructions immediately;

4) movw, word transfer instruction;

5) MOVD, two-word transmission instruction;

6) MOVR, real number transfer instruction.

2. Block transfer:

1) BMB, byte block transfer instruction;

2) BMW, block transfer instruction;

3) BMD, two-word block transmission instruction.

The communication between the two PLCs should first see whether it is the same brand and model, if it is the same model, it can be used to use the CPU to communicate without the bucket function, generally do not need to program, only need to set the parameters;

If the brands of the two PLCs are different, it is generally necessary to increase the equipment, and the specific principle is as follows

There are two options for PLCs between different brands if they want to communicate.

1. Use the communication protocol that is compatible with both, and compare the modbus protocol that is more widely used at present.

Second, use the Potato gateway module to convert one of the protocols into another supported protocol.

For example, Siemens uses Profibus-DP, AB uses ControlNet protocol, and the two Tanshi protocols are different, so the gateway module can be used to convert the DP protocol and convert the rock back into the ControlNet protocol, which is more well-known such as HMS.

Siemens PLC transmission instructions are mainly divided into two categories, one is single transmission, and the other is block transmission

1. Single transmission:

1) movb, byte transfer instruction;

2) BIR, transmit bytes to read the instruction immediately;

3) BIW, send bytes to write instructions immediately;

4) movw, word transfer instruction;

5) MOVD, two-word transmission instruction;

6) MOVR, real number transfer instruction.

2. Block transfer:

1) BMB, byte block transfer instruction;

2) BMW, block transfer instruction;

3) BMD, two-word block transmission instruction.

What kind of teleportation command? In the ladder diagram, move is.

Statement table l 100

t md100

It is to transfer 100 to MD100.

If not, can you be more detailed?