Why can’t I connect PLC and MICWIN programming software with RS232PPI cable after using NETW NETR instruction?

When using the NETWNETR instruction, the port of the PLC is defined as the master. The PPI network is a token network. Once the primary station has a token, the primary station controls the read and write access rights of the network, and other primary stations cannot access the primary station. All MICROWIN cannot communicate properly with the PLC