Kuka

Hi ALL! I have problem with RS485 in V1040 between V280. I create test program for testing communicate between two controllers. At first i change V280 PORT2 to RS485 terminal and V1040 PORT2 to RS485 terminal. Second connect with RJ12 1---1 6---6 but Master not Read Slave. Can you help me? In attcah test program. MODBUS slave v280 RS485.vlp MODBUS via v1040 RS485 master.vlp