Detailed explanation of specific methods and steps for TCP communication between s7-1500 PLCs (picture and text)

S7-1500 PLC Carry out between TCP The specific methods and steps of communication are explained in detail

S7-1500 CPU Between TCP Communication configuration

S7-1500 And S7-1500 Ethernet communication between can be through TCP or ISO on TCP Protocol to implement , The communication instructions used are on both sides CPU call T-block (TSEND_C, TRCV_C, TCON, TDISCON, TSEN, TRCV) Instructions to implement .

The communication mode is bilateral communication , therefore TSEND and TRCV They have to come in pairs .

Hardware and software requirements and completed communication tasks
Hardware ：
① S7-1500 CPU
② PC （ With Ethernet card ）
③ TP cable ( Ethernet cable ）
Software ：
STEP7 V14 And above
Completed communication tasks ：
① take PLC_1 Communication data area of DB3 In the block 100 Bytes of data are sent to PLC_2 Receive data area of DB4 In block .
② take PLC_2 Communication data area of DB3 In the block 100 Bytes of data are sent to PLC_1 Receive data area of DB4 In block .

Communication programming , Configuration of connection parameters and communication parameters

1. open STEP7 v14 Software and create a new project

stay STEP7 V1