OMRON CJ1W-CORT21 PLC module

Omron CJ1W-CORT21 PLC module

CJ1W-CORT21

User-defined CAN interface unit (11- and 29-bit identifiers)

Specifications

I/O system    CJ I/O Bus

Expansion unit type    CPU Bus Unit

Type of module    Communication

IO-Link master

Communication port(s)    CAN

Number of communication ports    1

Product Height (unpacked)    90 mm

Product Width (unpacked)    31 mm

Product Depth (unpacked)    78.7 mm

Product Weight (unpacked)    160 g

This setting determines whether CPU Unit battery errors are detected. Set the

PLC Setup so that battery errors are not detected when using battery-free

operation. Refer to the CS/CJ Series Programming Manual for details.

If this setting is set to detect errors (0) and a battery error is detected, the Bat

tery Error Flag (A40204) will be turned ON.

Note

1. The contents of the DM, EM, and HR Areas in the CPU Unit are not backed

up to flash memory; they are backed up only by a Battery. If the Battery

voltage drops, this data may be lost. Provide countermeasures in the pro

gram using the Battery Error Flag (A40204) to re-initialize data or take oth

er actions if the Battery voltage drops

2. A battery error will be detected when the battery is disconnected or its volt

age drops below the minimum allowed.

Backup

Disconnected or

voltage too low

Battery Error

Flag (A40204)

ON

If this setting is set to detect errors (0), an interrupt task error will be detected

in the following cases:

• IORF(097) or FIORF(225) (CJ1-H-R CPU Units only) is executed in an

interrupt task to refresh a Special I/O Unit’s I/O while that Unit’s I/O is

being refreshed during cyclic refreshing.

These settings are used to convert part of the EM Area to file memory.

Programming Console

The specified EM bank and all subsequent banks will be set aside as file

memory. Changing these settings using the Programming Console does not

format the specified EM banks; the EM banks must be formatted with a Pro

gramming Device after changing these PLC Setup settings. When formatting

the EM banks with a Programming Console, refer to 7-2 Memory Card Format

in the Programming Console Operation Manual (W341).

CX-Programmer

With the CX-Programmer, file memory will be formatted when file memory

conversion and the number of banks to be converted is specified when trans

ferring the PLC Setup. (EM banks cannot be formatted as file memory unless

they have been specified as file memory in the PLC Setup.)

Once part of the EM Area has been formatted for use as file memory, it can be

converted back to normal EM Area usage by changing these PLC Setup set

tings back to their previous value and “un-formatting” the EM banks with a

Programming Device.

1. The actual starting file memory bank is stored in A344 (EM File Memory

Starting Bank). When the settings in the PLC Setup have been changed

but the EM Area hasn’t been formatted, the PLC Setup setting will differ

from the actual file memory setting in the EM Area. In this case, the values

in A344 can be checked to see the actual file memory setting.

2. The EM Area cannot be formatted if the current EM bank is one of the

banks that is being converted to file memory