S485/RS422电缆 5m 6ES7 902-3AC00-0AA0 RS485/RS422电缆 10m 6ES7 902-3AG00-0AA0 RS485/RS422电缆 50m 6GK7 342-5DA02-0XE0 CP342-5通讯模块 6GK7 342-5DF00-0XE0 CP342-5 光纤通讯模块 6GK7 343-5FA01-0XE0 CP343-5通讯模块 6GK7 343-1EX30-0XE0 CP343-1 以太网通讯模块 6GK7 343-1EX21-0XE0 CP343-1 以太网通讯模块 6GK7 343-1CX10-0XE0 CP343-1 以太网通讯模块 6GK7 343-1GX30-0XE0 CP343-1 IT以太网通讯模块(支持PROFINET)