RIEVTECH STUDIO SOFTWARE MANUAL 28 Classic： MODBUS function code:01(read) 05(single Write) 15(Multiple Write) EXM-12/ELC-12-N(F1--F128): 1536~1663 PR-12/PR-14/PR-24(F1--F256): 1536~1791 REG MODBUS function code: 03(read) 16(Multiple Write) PR-6/PR-12-E(REG0--REG64): 0~63 LONG R/W EXM-12/ELC-12-N/PR-12/ PR-14(REG0--REG512): 0~511 PR-18/PR-24(REG0--REG1023) 0~1023 REG/DW (Updated version) MODBUS function code (read) 16(Multiple Write) For All CPUs: REG0: REG1: REG2: REG3: . . REG10 Address formula： REG =25476 +2 X X For example, REG20 =25476+2X20 =25476+40 =25516 25476 25478 25480 25482 . . 25496 DWORD R/W Analog input Fashion: PR-6/PR-12-E/PR-12(AI1--AI4): 1024~1279 Signe d short R