Troubleshooting with the DeviceNet Unit Indicators

Section 9-1

DeviceNet Unit Response

Stops operation.

Correction

Set the communications speed correctly and restart the DeviceNet Units.

CPU Unit Faulty (H6)

7-segment

MS indicator

 

NS indicator

Error log (Hex)

 

 

 

 

 

H6

Red (flashing)

OFF

 

000F

 

 

 

 

 

DeviceNet Unit Response

Records the error in the error log. (The time information is set to all zeroes.)

Stops operation.

Correction

Replace the CPU Unit if the error recurs when the CPU Unit is restarted.

I/O Table Not Registered

7-segment

MS indicator

 

NS indicator

Error log (Hex)

 

 

 

 

 

H7

Red (flashing)

OFF

 

0006

 

 

 

 

 

Likely Cause

The CPU Unit’s I/O table is not registered.

DeviceNet Unit Response

Records the error in the error log.

Stops operation.

Correction

Create the I/O table.

CPU Unit Memory Faulty

7-segment

MS indicator

 

NS indicator

Error log (Hex)

 

 

 

 

 

HA

Red (flashing)

---

 

0012

 

 

 

 

 

Likely Cause

A parity error occurred while reading the routing table.

DeviceNet Unit Response

Records the error in the error log and continues processing

The routing table is treated as missing.

Flags Allocated for C200H DeviceNet Master Unit (CIO n+24)

Bit 14 (Error Flag) and bit 03 (the Structure Error Flag) will be ON.

CIO Area Flags Allocated to DeviceNet Unit

Bits 00 and 12 of n+10 (the Unit Error Flag and Routing Table Error Flag) will be ON.

Correction

Register the routing table in the CPU Unit again and restart the CPU Unit.

Replace the CPU Unit if the error recurs.

CPU Unit Faulty (Hb)

7-segment

MS indicator

 

NS indicator

Error log (Hex)

 

 

 

 

 

Hb

Red (flashing)

---

 

0011

 

 

 

 

 

Likely Cause

A timeout occurred while reading the routing table.

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Omron CS1W-DRM21, CJ1W-DRM21 CPU Unit Faulty H6, Table Not Registered, CPU Unit Memory Faulty, CPU Unit Faulty Hb