Moxa TC-SW04-M12-4P-T [26/43] Tc cp02 db t can bus interface

Moxa TC-SW04-M12-8P [26/43] Tc cp02 db t can bus interface

TC-6000 Series Expansion Modules Software Installation and Programming Guide

4-6

Now setting is RS422 interface.

ATTENTION

Serial interfaces

will shift device node identifiers depending upon the location and number of cards

mounted in the platform

. E.g. i

f there are originally two cards mounted in the machine, and card number 1 is

removed, then the second card’s

number will change from /dev/ttyM4 to /dev/ttyM7 to /dev/ttyM0

and

/dev/ttyM

If a user wants to configure the machine for fixed serial interface device node identifiers, you can create a UDEV

rule in

/etc/udev/rules.d/. For help with this, you may consult the UDEV manual files, another Linux

manual, or Moxa technical support for more details.

The system default for TC-SP04-DB44-T interfaces is RS-232. By editing the device manager’s rule scripts, it is

possible to set all serial ports to one of the serial protocols (RS-485 or RS-422) instead. The following steps

describe how to do so.

1. Edit Moxa’s custom rules file for the device manager, which can be found at

/etc/udev/rules.d/96-moxa.rules. Add the following command to 96-moxa.rules:

RUN+="/bin/setinterface /dev/ttyM%n 0”

# Set the device, TC-SP04-DB44-T, 0x1393:0x1042 default as 232 mode interface

DRIVERS=="mxser", ATTRS{vendor}=="0x1393", ATTRS{device}=="0x1042",

RUN+="/bin/setinterface /dev/ttyM%n 0"

"96-moxa.rules"

ATTENTION

The

VendorID for the TC-SP04-DB44-T is 0x1393, and the DeviceID is 0x1042.

2. To change the default serial interface mode, edit the setinterface command you have just added to the

Moxa rules file (

/etc/udev/rules.d/96-moxa.rules). This will cause the Linux kernel to automatically

set the TC-6000 series module to your preferred interface at every reboot.

• For RS-232, use

RUN+="/bin/setinterface /dev/ttyM%n 0"

• For RS-485 2-wire, use

RUN+="/bin/setinterface /dev/ttyM%n 1"

• For RS-422, use

RUN+="/bin/setinterface /dev/ttyM%n 2"

• For RS-485 4-wire, use

RUN+="/bin/setinterface /dev/ttyM%n 3"

3. When finished, you must un-mount the writable file system and reboot your computer

Moxa:~# umount /

Moxa:~# reboot

4. Once the computer restarts, confirm that the interfaces have been reset to your preferred interface settings.

Moxa:~# setinterface /dev/ttyM0

Now setting is RS485-2WIRES interface.

TC-CP02-DB-T: CAN Bus Interface

The TC-CP02-DB-T module provides TC-6000 series computers with a CAN bus interface. CAN is a broadcast

serial bus standard for connecting electronic control units (ECUs). Each node is able to send and receive

messages, but not simultaneously: a message (consisting primarily of an ID—usually chosen to identify the

message-type/sender—and up to eight message bytes) is transmitted serially onto the bus, one bit after

another. This signal-pattern codes the message (in NRZ) and is sensed by all nodes.

The Moxa TC-CP02-DB-T module provides the CAN bus interface for industrial CAN communication. TC-6000

series computer provide the SocketCAN interface for industrial CAN communication. The SocketCAN concept

Moxa TC-SW04-M12-4P-T [26/43] Tc cp02 db t can bus interface

Содержание

Похожие устройства