ISPSoft User Manual 3.4.3.1 Data Exchange - COM2 On the page of tab Data Exchange - COM2 , double click a data exchange table which is to be set to open Item above. Remote Address is the address of the target slave for data exchange. The Shortest Update Cycle is window as below. Select the checkbox of Enable to enable the data exchange table in the mode mentioned the period for data exchange of the data exchange table. If the target device does not make any response within the time specified by Connection Timeout , that is timeout.
The master can complete the read and write in a command to improve the efficiency of data exchange by selecting Support Read/write synchronization (Function code 0x17) in which the specific MODBUS function code is used. Please make sure that all devices in data exchange support MODBUS function code for read and write synchronization. Otherwise, the read and write will fail on account of the failure to identify the function codes after the command from the master is received. Device Type is the model of the target slave including Delta PLC and standard MODBUS devices. Read AHxxEMC series read data from a remote device. Local Start Address:
Device type and start address of devices where AHxxEMC series store data; Remote Start Address: Device type and start address of the remote device to be read; Quantity: Data length of input 3-208