Lika EM58 MB, User Manual

Page: 65 / 92

ES58 • EM58 MODBUS®
7 Programming parameters
7.1 Parameters available
Hereafter the parameters available for the MODBUS encoders are listed and
described as follows:
Parameter name [Register address]
[Register number, data types, attribute]
 The register address is expressed in hexadecimal notation.
 The register number is expressed in decimal notation.
 Attribute:
ro = read only access
rw = read and write access
7.1.1 Machine data parameters (Holding registers)
Machine data parameters are accessible for both writing and reading; to read
the value set in a parameter use the
03 Read Holding Registers
function code
(reading of multiple registers); to write a value in a 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 “6.4.1 Implemented function
codes“ section on page 55.
Custom counts per revolution [0000-0001 hex]
[Registers 1-2, Unsigned32, rw]
WARNING
This parameter is active only if the bit 0
Scaling function
in the
Operating
parameters [0008 hex]
register is set to “=1”. If
Scaling function
= 1
(ENABLED) the singleturn resolution values set in this parameter are active and
used by the encoder; otherwise, if
Scaling function
= 0 (DISABLED) the system
uses the physical resolution values to calculate the position information:
ES58: physical singleturn resolution = 4096 cpr; number of physical revolutions
= 1 revolution; physical total resolution = 4096 = 12 bits.
EM58: physical singleturn resolution = 4096 cpr; number of physical revolutions
= 16384 revolutions; physical total resolution = 67 108 864 = 26 bits.
MAN ESx58x_EMx58x MB E 1.3 Programming parameters 65 of 92