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Table 6-8 Read F, V1, V2 Query Message Addr Fun 11H 03H Data start addr HI 40H Data start addr LO 00H Data #of regs HI 00H Data #of regs LO 06H CRC 16 regs HI D2H CRC 16 regs LO 98H Response The Acuvim II series meter response includes the meter address, function code, quantity of data bytes, data, and error checking. An example response to read F, V1 and V2 (F=42480000H (50.00Hz), V1=42C7CCCDH (99.9V), V2=42C83333H (100.1V)) is shown: Table 6-9 Read F, V1 and V2 Message Addr Fun 11H 3H Data5 HI 42H Byte count 0CH Data5 LO C8H Data1 HI 42H Data1 LO 48H Data 6 HI 33H Data 2 HI 00H Data6 LO 33H Data2 LO 00H CRC16 HI CAH Data3 HI 42H Data3 LO C7H Data4 HI CCH Data4 LO CDH CRC16 LO 7FH 4. Control Relay (Function Code 05) Query This message forces a relay to either turn "ON" or "OFF". Any relay that exists within the Acuvim II series meter can be forced to either "ON" or "OFF" status. The data value FF00H will set the relay on and the value 0000H will turn it off; all other values are invalid and will not affect that relay. The example below is a request to the Acuvim II series meter with the address of 17 to turn on Relay1. Table 6-10 Control Relay Query Message 194 Addr Fun 11H 05H DO addr HI 00H DO addr LO 00H Value HI FFH Value LO 00H CRC 16 HI 8EH CRC 16 LO AAH