Tecnologic TLK 94, Operating Instructions Manual

Page: 12 / 17

widely used in several PLC and supervision programs available on
the market (protocol manual is available on request).
The interface circuit allows the connection of up to 32 instruments
on the same line.
To maintain the line in rest conditions a 120 Ohm resistance (Rt)
must be connected to the end of the line.
The instrument is equipped with two terminals called A and B which
have to be connected with all the namesake terminals of the net.
For the wiring operation it is advisable to adopt a screened cable
wired as in the drawing.
TLK94 n.2 TLK94 n.1
3a
GND
2a
A B
1a
A B
TLK94 n.N
GND A GND B
shield
A
Interface
RS485
GND
B
HOST
(PC/PLC)
120 ohm
Rt
3a 2a 1a 3a 2a 1a
If the instrument is equipped with a serial interface, the parameters
to be programmed are the following, all present in the parameters
group
“ ] SEr” :
"Add"
: Address of the station. Set a different number for each
station, from 1 to 255.
"baud" : Transmission speed (baud-rate), programmable from
1200 to 38400 baud. All the stations have to have the same
transmission speed.
"PACS" : Programming access. If programmed as "LoCL" this
means that the instrument is only programmable from the
keyboard, if programmed as "LorE" it is programmable both from
the keyboards and serial line.
If an attempt is made to enter the programming from the keyboard
whilst a communication through the serial port is in progress the
instrument will visualise
"buSy" to indicate the busy state.
4.20 - PARAMETERS CONFIGURATION BY “ A01”
The instrument is equipped with a connector that allows the trans-
fer from and toward the instrument of the functioning parameters
through the device
TECNOLOGIC A01 with 5 poles connector.
This device it’s mainly useable for the serial programming of the
instruments which need to have the same parameters configuration
or to keep a copy of the programming of an instrument and allow its
rapid retransmission. To use the device A01 it’s necessary that the
device or instrument are being supplied.
Instrument supplied and device not supplied
SUPPLY
Instrument supplied from the device
ADAPTER
SUPPLY
AC SUPPLY 12 VDC
P.A.: For the instruments equipped with RS485 serial
communication, it’s indispensable that the parameter “PACS” is
programmed = LorE.
For additional info, please have a look at the A01 instruction
manual.
5 - PROGRAMMABLE PARAMETERS TABLE
Here following are described all the parameters available on the
instrument. Some of them could be not present or because they
are depending on the type of instrument or because they are
automatically disabled as unnecessary.
Group “
]
SP”
(parameters relative to the Set Point)
9999 SPLL ÷ 9999 Set Point massimo
SPHL
8
-1999 -1999 ÷ SPHL Set Point minimo
SPLL
7
0 SPLL ÷ SPHL Set Point 4
SP4
6
0 SPLL ÷ SPHL Set Point 3
SP3
5
0 SPLL ÷ SPHL Set Point 2
SP2
4
0 SPLL ÷ SPHL Set Point 1
SP1
3
1 1 ÷ nSP Set point Attivo
SPAt
2
1 1 ÷ 4 Numero Set point
programmabili
nSP 1
Note Def. Range Description Par.
Gruppo “
]
InP”
(parametri relativi agli ingressi)
J tc :
J/ CrAL/ S/ b/
E/ L/ n/ r/ t/ C/
Ir.J / Ir.CA
rtd :
Pt1 / Ptc / ntc
I :
0.20 / 4.20
UoLt :
0.50 / 0.60 /
12.60 / 0.5 /
1.5 / 0.10 /
2.10
Probe type:
J=thermocoupled J
CrAL=thermocoupled K
S=thermocoupled S
b=thermocoupled B
E=thermocoupled E
n=thermocoupled N
r=thermocoupled R
t=thermocoupled T
C=thermocoupled C
Ir.J=IR Sen. IRS J
Ir.CA=IR Sen. IRS K
Pt1=thermores. Pt100
0.50= 0..50 mV
0.60= 0..60 mV
12.60= 12..60 mV
Ptc= PTC KTY81-121
ntc= NTC 103-AT2
0.20= 0..20 mA
4.20= 4..20 mA
0.1= 0..1 V
0.5=0..5 V
1.5= 1..5 V
0.10= 0..10 V
2.10= 2..10 V
SEnS
10
tc tc / rtd / I /
UoLt / SEr
Input type HCFG 9
Note Def. Range Descrizione Par.
TECNOLOGIC spa - TLK 94 -OPERATING INSTRUCTIONS - Vr.01 - 01/10 - ISTR-MTLK94ENG1 - PAG. 12