GE PACSystems RXi User Manual

Chapter 8. Gigabit Ethernet (GbE) Interface Overview and OperationGFK-2816F August 2015 171(Word 10) Local Controller Memory Type: Words 10-11 specify the location in the local controllerwhere the Ethernet interface will store data received from the remote device. Valid values forWord 10 are listed below.TypeValue(Decimal) Description%W 196 Word memory (word mode)%R 8 Register memory (word mode)%AI 10 Analog input memory (word mode)%AQ 12 Analog output memory (word mode)%I 1670Discrete input memory (byte mode)Discrete input memory (bit mode)%Q 1872Discrete output memory (byte mode)Discrete output memory (bit mode)%T 2074Discrete temporary memory (byte mode)Discrete temporary memory (bit mode)%M 2276Discrete momentary internal memory (byte mode)Discrete momentary internal memory (bit mode)%SA 2478Discrete system memory group A (byte mode)Discrete system memory group A (bit mode)%SB 2680Discrete system memory group B (byte mode)Discrete system memory group B (bit mode)%SC 2882Discrete system memory group C (byte mode)Discrete system memory group C (bit mode)%S7 3084Discrete system memory (byte mode)Discrete system memory (bit mode)%G 5686Discrete global data table (byte mode)Discrete global data table (bit mode)(Word 11) Local Controller Memory Address: Word 11 determines the starting address inthe local controller in which the data from the remote device is to be stored. The valueentered is the offset (1-based) from the beginning of CONTROLLER memory for the memorytype and mode specified in Word 10. This offset will be either in bits, bytes, or wordsdepending on the mode specified. Valid ranges of values depend on the CONTROLLER’smemory ranges. Be sure this area is large enough to contain the requested data withoutoverwriting other application data.(Word 12) Remote Device Address: Word 12 specifies the address in the remote ModbusTCP device.Note: The function code determines the Modbus server address area, Word 12 is theaddress within this area.(Word 13) Number Registers in Remote Device: Words 13 specifies the quantity ofregisters (16bit words) to read from the remote device.(Word 14) Unit Identifier: This field is typically used by Ethernet to Serial bridges to specifythe address of a Modbus Slave on a multi-drop link. The Modbus TCP Unit Identifier is aspecial control code used in a Modbus TCP message block.7 Read-only memory, cannot be written to.