266 43-TV-25-35 GLO Iss.4 Dec 06 UKA5E01001767-04Modbus Memory Map Supplement:Analogue Input ValueAnalogue readings in engineering units. 4byte IEEE floats using 2 Modbus registers perreading.Communications InputValues can be sent to the recorder for inclusion in the Maths Block, using command 16 upto 32 IEEE floats can be sent to the recorder. Using CV1 to CV32 in the Maths Block, thesevalues can be displayed on the pens.i.e. P1 = CV1 will set Pen 1 to the engineering value set address 1880 with the function code16. Once again these are 4 byte IEEE floats using 2 Modbus registers per reading.Pen ValuesPen values in engineering units, 4 byte IEEE floats using 2 Modbus registers per reading.CV1............CV32CV33............CV64CV1 - 1880.........CV32ECV1 -2400........................ECV - 64Comms variable to beused in Maths blockModbus registersSo ECV1 @ 2400 is a different modbuscomms register but maps to exactly thesame place as CV1 @1880.Both map to the comms variables CV1Figure 22.1 Comms variables
