BROSE Systeme PM 984, Instruction Manual

Page: 22 / 26

Reading / Setting the Limit Values
Note: Not available in mode 0 and 0 +128
Syntax:
G <CNo.> [ = <1
st
Value>, <2
nd
Value>, <Hyst.>]
G Command
<GNo.> Limit value number 0 or 1
= Optional to set limit value, otherwise read
<1
st
Value.> 1
st
Limit value
<2
nd
Value.> 2
nd
Limit value
<Hyst.> Disable hysteresis (only positive values selectable)
Two limit values are available for each channel, which are used for the response of the re-
lays. To avoid jittering of the relay, a hysteresis can be preset. The hysteresis gives the
amount which the value must be stepped under or stepped over before the relay returns
to rest position. All values are given in their basic scaling without decimal point.
Example: Limit value pair 2 should give alarm at a measured value <0
or >187.9 with a hysteresis of 1.0.
Computer: G1=0.1879.10
Instrument: OK
Read limit value pair 2
Computer: G1
Instrument: +0. +1879.10
Note: The second limit value pair is only fetched for limit value monitoring when the
configuration of one relay was set to tolerance range monitoring for this limit value
pair.
In the operating mode < 128, the Set Configuration Register is locked (see section Rea-
ding / Setting Operating Mode
Manual PM984
20 State July 2002 - All subject to change without notice