7
Analogue Output 1:
Moisture in % (0…50%, variable adjustable)
Analogue Output 2:
Temperature 0….100°C, variable adjustable
F
For the analogue outputs 1 and 2 there are two adjustable options: Analog Output: (two possible selections)
0..20mA 4..20mA
Output Channel 1 and 2:
(three possible selections)
Moisture Temperature:
Analogue output 1 for moisture, output 2 for temperature.
For analogue output 1 and 2 the moisture dynamic range and temperature dynamic range can be variably adjusted.
The moisture dynamic range should not exceed 100%
Moisture
Range: Temp.
Range:
Maximum: e.g. 50 for maize (Set in %)
Maximum: 60°C
Minimum:
0
Minimum:
0°C
2.5 The serial RS485 and IMP-Bus interface
TRIME-GW Line is equipped with a standard RS485 as well as the IMP-Bus interface to set and readout individual
parameters or measurement values. An easy to implement data transfer protocol enables the connection of several
sensors/probes at the RS485-Interface. In addition, the TRIME-GW Line can be directly connected via the module
SM-USB to the USB port of a PC, in order to adjust individual measuring parameters or conduct calibrations.
NOTE:
The initial default setting of the serial interface is pre-set for the IMP-Bus. To operate with the RS485 it is
necessary to switch and activate the RS485 interface with help of the modul SM-USB. The transmission
protocol of TRIME-GW Line can be requested via “Contact us” on www.imko.de.
2.6 The IMP-Bus as a user friendly network system
With external power supply on site for the SONO probes, a simple 2-wire cable can be used for the networking. By
use of 4-wire cables, several probes can be also supplied with power.
Standard RS485-interfaces cause very often problems! They are not galvanically isolated and therefore raises the
danger of mass grindings or interferences which can lead to considerably security problems. An RS485 network
needs shielded and twisted pair cables, especially for long distances. Depending on the topology of the network,
it is necessary to place 100Ohm termination resistors at sensitive locations. In practice this means considerable
specialist effort and insurmountable problems.
The robust IMP-Bus ensures security. SONO-probes have in parallel to the standard RS485 interface the robust
IMP-Bus which is galvanically isolated which means increased safety. The serial data line is isolated from the
probe´s power supply and the complete sensor network is therefore independent from single ground potentials
and different grid phases. Furthermore, the IMP-Bus transmit its data packets not as voltage signals, but rather as
current signals which also works at already existing longer lines. A special shielded cable is not necessary and also
stub lines are no problem.
2.7 Error Reports and Error Messages
TRIME-GW Line is very fault-tolerant. This enables failure-free operation. Error messages can be recalled via the
serial interface.
