FIAMA EP43RS, User And Maintenance Manual

Page: 7 / 12

Hollow shaft display with serial output
EP43RS / EP46RS
Date: 06/04/21 File: EP4RS_4.1_ing.doc Rev: 4.1 Page: 7/12
Serial connection protocol
The device has a serial output connection RS485 with MODBUS RTU protocol to dialogue with remote units.
When a power is supply is not available, the serial port is not active and the instrument does not respond to
the master. Below is a list of the registers of the instrument with the relative addresses and number of bytes.
It is possible to read and write these registers, using a reading/writing ModBus compatible query.
ADDRESS REGISTER NAME SIZE (bytes) RANGE
0
0
0 0
0
value to be displayed after one
complete rotation of the shaft
4 -99999...99999
2
decimal point position for
0 0 0 0
2 0...4
3
+%
+% +%
+%
position of decimal point
2 0...4
4
+// +// +// +//
button activation mode
2 000... 0x151
5
%. %. %. %.
count direction
2 0...1
6
. . . .
Preset0 value
4 -99999...99999
8
,,
,, ,,
,,
backlash compensation value
4 -99999...99999
10
+, +, +, +,
target value tolerance
2 0...59999
11
0#// 0#// 0#// 0#//
battery status
2
0x0000 = battery OK
0xFFFF = battery needs
substitution
0x00FF = battery
completely depleted or
malfunctioning(refer to
battery status section)
12
-0,/ -0,/ -0,/ -0,/
Current value
4 -99999...99999
14
//
// //
//
Target value
4 -99999...99999
16
SAVE
setting the value 0x5A4E, the
parameters transferred by
modbus are saved in the
EP43RS / EPRS permanent
memory
2 0x5A4E