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EM58 – HS58 - HM58 MODBUS TCP/IP
7 Programming parameters
7.1 Parameters available
Hereafter the parameters available for the MODBUS encoders are listed and
described as follows:
Parameter name [Register number]
[register address, data type, attribute]
 The register number and address are expressed in decimal notation.
 Attribute:
ro = read only access
rw = read and write access
The MODBUS registers are 16-bit long; while all the encoder parameters -except
the
Watchdog timeout [82] parameter- are 2-register long, i.e. 32-bit long
(independently of their size, whether they are 32-bit long or 16-bit long).
word MSW LSW
bit 31 ... 16 15 ... 0
msb lsb msb lsb
7.1.1 Holding Register parameters
Holding registers ( Machine data parameters) are 4X Reference Registers and
accessible for both writing and reading; to read the value set in the parameter
use the
03 Read Holding Registers
function code (reading of multiple
registers); to write a value in the parameter use the
06 Write Single Register
function code (writing of a single register) or the
16 Write Multiple Registers
(writing of multiple registers); for any further information on the implemented
function codes refer to the “6.5.1 Implemented function codes“ section on page
39.
NOTE
Always save the new values after setting in order to store them in the non-
volatile memory permanently. Use the
Save parameters
function available in
the
Control Word [111-112]
registers, see on page 60.
Should the power supply be turned off all data that has not been saved
previously will be lost!
MAN EM58_HS58_HM58 MT E 1.1.odt Programming parameters 51 of 104