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Description
GB
Item M7TIC/IO is an electronic device intended for use in monitoring systems, which allows a remote computer to control its inputs and outputs via an
RS485 serial line. The protocol adopted is MODBUS (on RS485) in the RTU and ASCII version.
Peripherals
1÷24
24 inputs dedicated to detecting the change of state
of signals from clean contacts with positive common
(generic alarms).
C
common for the inputs
1÷6
6 n.o. outputs with relay with 230V, 2A contacts
with two commons (one for 4 relays and one for 2 relays)
C
common for the outputs
analogue inputs with range in current 4-20mA
with positive reference voltage of 24Vcc
-
Tx/Rx RS485
+
Tx/Rx RS485
SG
Signal mass
Power supply 24 – ~
1
Power supply 24 – ~
2
Note:
use power supplies with double insulation or equivalent
A1, A2, A3 3 configurators for the address.
B
1 configurator for the speed.
M
1 configurator for the mode.
25-pole connector on the side for the connection
of optional expansion modules (expansion bus).
LED indications
- TX LED ON: Transmission in progress
- RX LED ON: Receiving in progress
- TX LED flashing and RX ON: initialisation.
Configuration
Using configurators an address is assigned to the device.
3 positions are to be configured to assign the address (for the ModBUS
protocol the address is from 1 to 247).
The remaining positions define the device mode of operation; in detail:
A1, A2, A3 – Modbus Address.
The Modbus address is defined by configuring the first three positions.
Each of these can be worth "no configurator" = 0, 1÷9.
With the MODBUS protocol the address value (in decimal)
is obtained as follows:
A1x100 + A2x10 + A3
Example:
A1=2, A2=3, A3= "no configurator":
the address value is 230.
Technical features
Dimensions: 6 DIN modules
Operating temperature: -10 ÷ 55 °C.
*
RT= Characteristic impedance of the cable
(e.g. 120Ω for Belden cable 9841 - 9842).
The end resistances are only inserted on the
first and last RS-485 node in the terminals
where the cable is connected.
M – Modbus Transmission mode.
The transmission mode is defined as follows:
- 1
- "other values"
- "no configurator"
B – Modbus Transmission Speed.
The transmission speed is defined as follows:
- 1
- 2
- 3
- 4
- 5
- 6
- "other values"
- "no configurator"
- configurator F
16
15 14 13 12 11 10 9
17
18
19 20 21 22 23 24 -
24V
RT
RS485
interface
Inputs 1-16
16
15 14 13 12 11 10 9
8
7
6
5
4
3
IN
ON
TX
RX
17
18
19 20 21 22 23 24 -
+ SG 1
2
C
IN
RS485
24V
Power supply,
RS485, common,
inputs 17-24
➩ ASCII mode
➩ "not allowed"
➩ "default" (RTU mode)
➩ 1.2kbit/s
➩ 2.4kbit/s
➩ 4.8kbit/s
➩ 9.6kbit/s
➩ 19.2kbit/s
➩ 38.4kbit/s
➩ "not allowed"
➩ "default" (speed 9.6kbit/s)
➩ Caution: do not use configurator F
8
7
6
5
4
3
2
1
1+
1-
2+
2-
3+
3-
4+
4-
IN
IN 4- 20mA
ON
TX
1
2
3
4
C
5
6
C
RX
OUT
M7TIC/IO
+ SG 1
2
C
24V
IN
RS485
24V
R
Inputs 4-20mA
2
1
1+
1-
2+
2-
3+
3-
4+
4-
IN 4- 20mA
1
2
3
4
C
5
6
C
OUT
M7TIC/IO
24V
R
Output
Output
group 1
group 2
16
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1+
1-
2+
2-
3+
3-
IN
IN 4- 20mA
ON
TX
1
2
3
4
C
5
RX
OUT
M7TIC/IO
17
18
19 20 21 22 23 24 -
+ SG 1
2
C
IN
RS485
24V
R
*
RT
4+
4-
6
C
24V
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