4-7 Errors that May Occur in Remote I/O Communications. Omron Sysmac CS/CJ Series DeviceNet Units

Errors that May Occur in Remote I/O Communications

Section 4-7

4-7 Errors that May Occur in Remote I/O Communications

The following errors may occur during remote I/O communications.

Condition

Error occurs in fixed allocations with the scan list disabled

Error

Structure

Error Flag

(word n+12, bit 04) turns

ON

Error occurs in either fixed or user-set allocations with the scan list enabled

Verification

Error Flag

(word n+12, bit 00) turns

ON

Details Results

Duplicate I/

O area

I/O area range exceeded

Unsupported

Slave

No slaves present

I/O size mismatched

Incorrect vendor

Incorrect device type

Incorrect product code

Incorrect connection bus

Unsupported connection

The same I/O word is allocated to two or more slaves. (This occurs whenever a slave that is allocated multiple words has one of the words allocated to the node address of another Slave.)

A slave is allocated an area outside the fixed allocations area.

(This occurs whenever slaves are allocated multiple words and a slave is allocated a word beyond node address 63 in the fixed allocations area.)

The I/O size of a slave exceeds

200 bytes (100 words). (This occurs if either the IN or the OUT size exceeds 200 bytes.)

A Slave registered in the scan list is not present.

The I/O size registered in the scan list does not match the I/O size of the slave.

Note

I/O size is compared in 8point (1-byte) units. If I/O size is registered at 8 points for example, then an error I/O size mismatch will not occur with a Slave with just one input point connected.

The vendor registered in the scan list does not match the slave vendor.

The device type registered in the scan list does not match the slave device type.

The product code registered in the scan list does not match the slave product code.

The connection bus registered in the scan list is set incorrectly.

The slave does not support the connection registered in the scan list.

Reconnect with the error slave and continue remote I/O communications.

Indicators 7segment display

d0 MS: Not related

NS:

Flashes red d1 d2 d5 d6 d6 d6 d6 d6 d6

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Errors that May Occur in Remote I/O Communications

Section 4-7

Condition

Fixed or user-set allocations

Error Details Results Indicators 7segment display

d9 I/O communications error A timeout occurred during remote

I/O communications. (The Slave response timed out 6 times in a row or an error occurred 3 times in a row.)

Reconnect with the error Slave and continue remote I/O communications.

*1

Network power error

Send timeout

The network is not supplying communications power.

A communications request was not successfully completed due to the following reasons:

• There are no devices on the network.

• Baud settings do not match for every node.

• CAN controller error

Duplicated node address

Bus OFF detected

The master node address is the same address as another node.

Bus OFF error was detected.

Master scan list logic error The master scan list data is incorrect.

MS: Not related

NS:

Flashes red

MS: Not related

NS: Goes out

All communications stop (remote

I/O communications stop, slave operation stops, and message communications are disabled).

Remote I/O communications stop

(Slave operation stops, but message communications are enabled).

MS: Not related

NS:

Flashes red

MS:

Flashes red

NS: Not related

E0

E2

F0

F1

E8

Note

Remote I/O communications will stop (7-segment display: A0) if DIP switch pin 3 on the front panel is turned ON to specify stopping remote I/O communications for I/O communications errors.

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Errors that May Occur in Remote I/O Communications

Section 4-7

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SECTION 5

Remote I/O Slave Communications

This section describes the remote I/O communications performed as a DeviceNet slave by the DeviceNet Unit.

5-1 Slave Remote I/O Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-1 Allocation Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-2 Remote I/O and Slave Communications Specifications . . . . . . . . . .

5-1-3 Procedures for Using Remote I/O Slave Communications . . . . . . .

5-2 Fixed Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-1 Allocated Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3 User-set Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-1 Connection Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-3 Connection Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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