Data subject to change without notice 7/07. © 2007 GE Drives10. Replacement Parts 10-111. Specifications 11-1Standard Specifications ..................................... 11-1Common Specifications ..................................... 11-3Outline Dimensions ............................................ 11-5Keypad Mounting Hole .................................... 11-1212. RS485 Modbus RTU Serial Communications 12-1Transmission Specification ................................ 12-1Connection ......................................................... 12-1Serial Interface Configuration ............................ 12-1Modbus RTU Functions ..................................... 12-1Drive Function Code Access ............................. 12-2Command and Monitor Data Registers ............. 12-2Data Format Specification ................................. 12-4Communication Errors ....................................... 12-813. Options 13-1Built-in Options .................................................. 13-114. Electromagnetic Compatibility (EMC) 14-1General ............................................................... 14-1Recommended Installation Instructions ............ 14-1ii