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Modbus Function Valid Range Description (0x02) Read Discrete Inputs 0 - 7 Reads the opto-isolated inputs. (0x01) Read Coils 0 - 7 Reads the state of open collector outputs. (0x05) Write Single Coil 0 - 7 Writes to a single open collector output. (0x0F) Write Multiple Coils 0 - 7 Writes multiple open collector outputs. (0x04) Read Input Registers 0 - 15/7 Reads the analog single-ended/differential inputs. (0x06) Write Single Register 0 - 1 Writes to a single analog output. (0x10) Write Multiple Registers 0 - 7 Writes multiple analog outputs. (0x64) Set A/D & D/A Configuration n/a * Sets the A/D and D/A configuration. (0x65) Get A/D & D/A Configuration n/a * Gets the A/D and D/A configuration. (0x66) Get Extended Module Configuration n/a Gets the hardware jumper configuration. Warning: * The SeaI/O 470 was not intended for end-user configuration via Modbus RTU or TCP commands. Instead, it is recommended that the SeaMAX API functions or MaxSSD utility be used to configure the module first, after which standard Modbus commands may be used to read or write the I/O.

Generated on 18 Sep 2007.