Metrix DATAWATCH IX Modbus User Manual page 6

2.5 Highlight the request, and click Poll button. The register will be read and dis-
played out.
2.6 In the Modbus register map, you can find the register type and address. If the
register type is unit8, its length is 1. If the type is float32, its length is 4.
Channel.3.Main.Type
Channel.3.Main.PV
Channel.3.Main.Status
2.7 The register address from the map is canonical address for raw data in integer
type. For instance, you read a float type of register from address 264, the unpro-
cessed reading is 501785684......., but the actual value should be a float number
5.01785684. To get this processed float type of value, you need calculate the native
address by using the formula (integer address x 2 + 0x8000). This is specified in the
Modbus map manual.
2.8 If you use the actual address in the Modbus scanner software, you will get the
actual value of the true type.
Doc# 1870872 • REV A
Specifies the type of channel
The process variable (output) of the
channel
The PV (output) status
(January 2018) Page
uint8 0X1900
float32 0X0108
uint8 0X0109
6 of 7
6400 N/A
264 Set by
Chanel.3.Main.
Resolution
265 N/A
RW
RO
RO