SIROTEC OPTION SUPPLIED SEPARATELY PLC COUPLING MODULE FOR COMPUTER LINK RCM 1, 1K/2, 2E/3, 3E, 3S TO S5-115U, -150U, AG 130WB RCM 1KC TO S5-115U W. 420 OPER. PANEL EMULATION, -150U,AG 130WB RCM 1.2D/3D TO S5-150U,AG 130WB