Omron NJ Series User Manual

Appendices
A-112
NJ-series CPU Unit Software User’s Manual (W501)
 POU Instance Restrictions
POU instances are subject to the following restrictions. The maximum number of POU instances
depends on the model and unit version of the CPU Unit and the version of the Sysmac Studio.
Maximum Number of POU Instances for the NJ501-
Maximum Number of POU Instances for the NJ301-
Refer to Number of POU Instances on page A-114 for information on counting POU instances.
There are restrictions to both variable usage and variable definitions.
 Restrictions to Variable Usage
The usage of variables is subject to the following restrictions.
*1 The data size of each variable depends on its data type. Refer to 6-3-5 Data Types for the sizes of the data
types.
*2 Refer to Number of Variables without a Retain Attribute on page A-114 for information on counting vari-
ables.
*3 Refer to Number of Variables with a Retain Attribute on page A-115 for information on counting variables.
*4 The restriction depends on the Sysmac Studio version and the unit version of the CPU Unit as follows: Sys-
mac Studio version 1.05 or higher and CPU Unit with unit version 1.04 or later: 5,000
Other combinations: 2,500
 Restrictions to Variable Definitions
Variable definitions are subject to the following restrictions.
Restriction
Version CPU Unit model
Sysmac Studio NJ501-
Maximum number of POU
instances
1.05 or lower 6,000
1.06 or higher 9,000
Restriction
Unit version/version CPU Unit model
CPU Unit Sysmac Studio NJ301-
Maximum number of POU
instances
--- 1.04 or lower 1,500
1.03 or earlier 1.05 or higher 2,400
1.04 or later 3,000
Restrictions to Variables
Restriction
CPU Unit model
NJ501- NJ301-
Maximum total size in Mbytes of variables without a
Retain attribute
*1
42
Maximum total size
*1
in Mbytes of variables with a Retain
attribute
20.5
Maximum number of variables
*2
without a Retain attri-
bute
90,000 22,500
Maximum number of variables
*3
with a Retain attribute
10,000
*4
Maximum number of network variables 40,000 40,000

Omron NJ Series Specifications

General

Program Capacity	Up to 128 MB
SD Card Slot	Yes
Power Supply Voltage	24 VDC
Motion Control	Yes
USB Ports	1
Operating Temperature	0°C to 55°C
Communication Interfaces	Ethernet/IP, EtherCAT, USB
Safety Function	Optional
Storage Temperature	-20°C to 75°C
Communication Ports	USB
Dimensions	Varies by model
Weight	Varies by model