Field Bus Interface I/O Block Description
Field Bus Interface I/O Blocks
The TM7 field bus interface I/O block is the first element of a TM7 distributed I/Os and allows distributed connection of sensors and actuators via a field bus.
Additionally to the field bus interface function, the TM7 field bus interface I/O blocks provides:
oan integrated power supply.
odigital connections, which can be configured as inputs or outputs.
Each model of field bus interface I/O block is distinguished by the field bus connectors, the number of I/O and its overall size (1 or 2).
The following table describes the field bus interface I/O block references available for your TM7 System:
|
Reference |
Field Bus Connection |
Digital Channels |
Refer to |
||||
|---|---|---|---|---|---|---|---|
|
Type |
IN |
OUT |
Number |
Type |
Connector |
||
|
TM7NCOM08B |
CANopen |
Yes |
No1 |
8 |
Input or Output Configurable |
M8, 3-pin |
Modicon TM7 CANopen I/O Blocks Hardware Guide |
|
TM7NCOM16A |
Yes |
Yes |
16 |
M12, 5-pin |
|||
|
TM7NCOM16B |
Yes |
Yes |
16 |
M8, 3-pin |
|||
|
1 To connect a TM7NCOM08B CANopen interface I/O block in a CANopen network use one of the following accessories: oTM7ACYC oTM7ACYCJ |
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If the CANopen interface I/O block is at the end of the line, connect a TM7ACTLA M12 CAN bus terminating resistor:
oto the accessory TM7ACYC• for a TM7NCOM08B.
oto the field bus OUT connector for a TM7NCOM16A or TM7NCOM16B.
Field Bus Interface I/O Blocks Main Features
The following figures give the main features of the field bus interface I/O blocks:
|
Size 1: TM7NCOM08B |
Size 2: TM7NCOM16• |
|---|---|
|
|
|
(A) Field bus IN connector (B) & (B2) TM7 bus OUT connector (B1) Field bus OUT connector (C) 24 Vdc power IN connector (D) 24 Vdc power OUT connector (1) Input / Output connectors (2) Status LEDs (3) Field bus settings rotary switches |
|
The distribution of power by the field bus interface I/O block consists of two dedicated circuits:
|
Designation |
Description |
|---|---|
|
24 Vdc Main power |
24 Vdc power that serves the electronics of the field bus interface I/O block and generates independent power for the TM7 power bus that serves the TM7 I/O blocks. |
|
24 Vdc I/O power segment |
The 24 Vdc power that serves: othe electronics of the I/O block, othe sensors and actuators connected to the field bus interface I/O block, othe expansion blocks, othe sensors and actuators connected to the expansion blocks. |
The following figure shows the pin assignment of the power IN (C) and OUT (D) connectors of the field bus interface I/O blocks:
|
Connector (C) |
Pin |
Designation |
|---|---|---|
|
1 |
24 Vdc Main power |
|
2 |
24 Vdc I/O power segment |
|
|
3 |
0 Vdc |
|
|
4 |
0 Vdc |
|
Connector (D) |
Pin |
Designation |
|---|---|---|
|
1 |
24 Vdc I/O power segment |
|
2 |
24 Vdc I/O power segment |
|
|
3 |
0 Vdc |
|
|
4 |
0 Vdc |
The following table gives a short description of the digital I/O embedded in the field bus interface I/O blocks:
