Modbus Registers OPTIMA...GOMOD
Short instruction 227VM-024-05-MB 
Written by: Michael Köhle    Date: 13.11.2014 08:56:00  Side 4 of 13
Function  Description 
Adr 
(only ModBus) 
Allows setting the address of the Modbus actuator, by turning the value 
selector. It is possible to set the address from 1 up to 247. 
If the value selector is turned to the end-stop "+" the 
Display shows "2 in", this allows to select the 
second level. If the second level is chosen, this is in-
dicated in the display by a small circle 
In the second level the functions are as follows 
Flow
Back to level one 
V
min
V
btw
V
max
Not in use 
Test  Adaption drive is switched on. 
Mode 
Shows the actual position of the angel of rotation 
(0…255 digital 0...100%) 
Adr. 
Allows to select the ModBus parameter 
(see separate documentation) 
V
nom
Allows to set the ModBus delay 
(see separate documentation) 
V
nom
Set-up of the V
nom
 according to the flow corresponding to 1 inWC (250 
Pa) differential pressure. The Setting of V
nom
 is done in three stages 
depending on value to be selected. 
Stage I:  0…995  in steps of 5 
Stage II:  1´000…9´950  in steps of 50 
Stage II:  10´000…99´500  in steps of 500 
  Max. 18´000 l/s or 65´500 m³/h 
For the first set-up no password is needed. After this first set-up one 
needs to set first the password (255) and wait until the display flashes 
and allows the setting of a different V
nom
. 










