132 • Process Data Architecture for MODBUS/TCPDigital Input ModulesWAGO-I/O-SYSTEM 750ETHERNET TCP/IP2 Channel Digital Input Modules750-400, -401, -405, -406, -410, -411, -412, -427, -438, (and all variations),753-400, -401, -405, -406, -410, -411, -412, -427Input Process ImageBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Data bitDI 2Channel2Data bitDI 1Channel12 Channel Digital Input Modules with Diagnostics750-419, -421, -424, -425, 753-421, -424, -425Input Process ImageBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Diagnosticbit S 2Channel 2Diagnosticbit S 1Channel 1Data bitDI 2Channel2Data bitDI 1Channel12 Channel Digital Input Module with Diagnostics and Output ProcessData750-418, 753-418The 750-418, 753-418 digital input module supplies a diagnostic andacknowledge bit for each input channel. If a fault condition occurs, thediagnostic bit is set. After the fault condition is cleared, an acknowledge bitmust be set to re-activate the input. The diagnostic data and input data bit ismapped in the Input Process Image, while the acknowledge bit is in the OutputProcess Image.Input Process ImageBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Diagnosticbit S 2Channel 2Diagnosticbit S 1Channel 1Data bitDI 2Channel2Data bitDI 1Channel1Output Process ImageBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Acknowledgement bitQ 2Channel 2Acknowledgement bitQ 1Channel 10 04 Channel Digital Input Modules
