ICS TRIPLEX T8423模擬量輸入模塊,模塊控制器
469將響應請求。從機11的消息格式和示例環(huán)回測試。主傳輸：BYTES示例/描述從機11功能代碼1 08環(huán)回測試DIAG代碼2 00 00必須是00 00數據2 00 00應該是00 00 CRC 2 E0 A1由主從機響應計算的CRC：BYTES示例/描述從屬機11功能碼1 08環(huán)返回測試DIAG碼2 00 00的從機地址1 0B響應消息必須是00 0數據2 00 0必須為00 00 CRC 2 E0 A1 CRC，由從屬GE Power Management 469電機管理繼電器6-13 6通信6.2支持的MODBUS功能6 6.2.8功能代碼16：存儲多個(gè)設置點(diǎn)MODBUS實(shí)現：預設多個(gè)寄存器469實(shí)現：存儲多設置點(diǎn)此功能代碼允許將多個(gè)設定點(diǎn)存儲到469存儲器中。Modbus“寄存器”是16位（兩字節）值，先傳輸高位字節。因此，所有469個(gè)設定值都作為兩字節值發(fā)送。一個(gè)傳輸中可存儲的最大設定值數量取決于從設備。Modbus允許最多存儲60個(gè)保持寄存器。對該功能代碼的469響應是回顯從屬地址、功能代碼、起始地址、存儲的設置點(diǎn)數量和CRC。消息格式和示例請求從設備11將值01F4存儲到設定點(diǎn)地址1180，將值01DE存儲到設定值地址1181。在該示例中的傳輸完成之后，469從機11將存儲以下設置點(diǎn)信息：地址數據1180 01F4 1181 01DE主傳輸：字節示例/描述從機11的從機地址1 0B消息功能代碼1 10存儲設置點(diǎn)數據起始地址2 11 80設置點(diǎn)地址1180設置點(diǎn)數量2 00 02 2設置點(diǎn)（共4字節）字節計數1 04 4字節數據數據1 2 01 F4地址數據1180數據2 2 01地址1181 CRC 2 DB B1的DE數據，由主從設備響應計算：BYTES示例/描述從設備11功能代碼1 10存儲設置點(diǎn)數據起始地址2 11 80設置點(diǎn)地址1180設置點(diǎn)數量2 00 02 2設置點(diǎn)CRC 2 45 B6 CRC，由從設備6-14 469電機管理繼電器GE電源管理6.2計算支持的MODBUS功能6通信6 6.2.9功能代碼16：執行命令某些PLC可能不支持使用功能代碼5執行命令，但支持使用功能碼16存儲多個(gè)設置點(diǎn)。要使用功能代碼16（10H）執行此操作，必須同時(shí)向469寫(xiě)入特定的命令序列。序列包括：命令功能寄存器、命令操作寄存器和命令數據（如果需要）。命令函數寄存器必須寫(xiě)入值5，表示請求執行操作。然后，命令操作寄存器必須寫(xiě)入內存映射中顯示的命令列表中的有效命令操作編號。如果命令操作需要數據，則必須使用有效數據寫(xiě)入命令數據寄存器。所選命令將在收到有效傳輸后立即執行。消息格式和示例在469（操作代碼1）主傳輸上執行重置：BYTES示例/描述從屬地址1 0B消息用于從屬11功能代碼1 10存儲設置點(diǎn)數據起始地址
The 469 will echo the request. MESSAGE FORMAT AND EXAMPLE Loopback test from slave 11. MASTER TRANSMISSION: BYTES EXAMPLE / DESCRIPTION SLAVE ADDRESS 1 0B message for slave 11 FUNCTION CODE 1 08 loopback test DIAG CODE 2 00 00 must be 00 00 DATA 2 00 00 must be 00 00 CRC 2 E0 A1 CRC calculated by the master SLAVE RESPONSE: BYTES EXAMPLE / DESCRIPTION SLAVE ADDRESS 1 0B response message from slave 11 FUNCTION CODE 1 08 loopback test DIAG CODE 2 00 00 must be 00 00 DATA 2 00 00 must be 00 00 CRC 2 E0 A1 CRC calculated by the slave GE Power Management 469 Motor Management Relay 6-13 6 COMMUNICATIONS 6.2 SUPPORTED MODBUS FUNCTIONS 6 6.2.8 FUNCTION CODE 16: STORE MULTIPLE SETPOINTS Modbus Implementation: Preset Multiple Registers 469 Implementation: Store Multiple Setpoints This function code allows multiple setpoints to be stored into the 469 memory. Modbus "registers" are 16-bit (two byte) values transmitted high order byte first. Thus all 469 setpoints are sent as two byte values. The maximum number of setpoints that can be stored in one transmission is dependent on the slave device. Modbus allows up to a maximum of 60 holding registers to be stored. The 469 response to this function code is to echo the slave address, function code, starting address, the number of Setpoints stored, and the CRC. MESSAGE FORMAT AND EXAMPLE Request slave 11 to store the value 01F4 to Setpoint address 1180 and the value 01DE to setpoint address 1181. After the transmission in this example is complete, 469 slave 11 will have the following Setpoints information stored: Address Data 1180 01F4 1181 01DE MASTER TRANSMISSION: BYTES EXAMPLE / DESCRIPTION SLAVE ADDRESS 1 0B message for slave 11 FUNCTION CODE 1 10 store setpoints DATA STARTING ADDRESS 2 11 80 setpoint address 1180 NUMBER OF SETPOINTS 2 00 02 2 setpoints (4 bytes total) BYTE COUNT 1 04 4 bytes of data DATA 1 2 01 F4 data for address 1180 DATA 2 2 01 DE data for address 1181 CRC 2 DB B1 CRC calculated by the master SLAVE RESPONSE: BYTES EXAMPLE / DESCRIPTION SLAVE ADDRESS 1 0B response message from slave 11 FUNCTION CODE 1 10 store setpoints DATA STARTING ADDRESS 2 11 80 setpoint address 1180 NUMBER OF SETPOINTS 2 00 02 2 setpoints CRC 2 45 B6 CRC calculated by the slave 6-14 469 Motor Management Relay GE Power Management 6.2 SUPPORTED MODBUS FUNCTIONS 6 COMMUNICATIONS 6 6.2.9 FUNCTION CODE 16: PERFORMING COMMANDS Some PLCs may not support execution of commands using function code 5 but do support storing multiple setpoints using function code 16. To perform this operation using function code 16 (10H), a certain sequence of commands must be written at the same time to the 469. The sequence consists of: command function register, command operation register and command data (if required). The command function register must be written with the value of 5 indicating an execute operation is requested. The command operation register must then be written with a valid command operation number from the list of commands shown in the memory map. The command data registers must be written with valid data if the command operation requires data. The selected command will execute immediately upon receipt of a valid transmission. MESSAGE FORMAT AND EXAMPLE Perform a reset on 469 (operation code 1) MASTER TRANSMISSION: BYTES EXAMPLE / DESCRIPTION SLAVE ADDRESS 1 0B message for slave 11 FUNCTION CODE 1 10 store setpoints DATA STARTING ADDRESS
