User Variables
See also : ACR Memory Usage
Products: ACR7000, ACR9000, 9030,9040,9600,9630,9640, Aries Controller (AR-xxCE), IPA
The Acrobasic language in the ACR9xxx, IPA and Aries Controller offers nearly 5000 pre-defined global user variable addresses in a variety of data types. Some of the variables are retained when the controller powers down. The ACR9xxx controllers utilize both FLASH memory and Battery Backed RAM (BBRAM). The Aries Controller utilizes FLASH and non-volatile USER RAM. BBRAM and NV User RAM store values automatically. Storing variable values in FLASH memory requires the use of the FLASH IMAGE command while programs are stopped. The ACR7000 is entirely flash-based. Using retentive variables such as P38912-P39167 (32-bit longs) or P39168-P39423 (32-bit floats)? No worries! The ACR7000 saves these in the background to behave the same as a battery-backed ACR9000 (9000PxUxBx), with the benefit of not having to periodically replace a battery or modify the program when upgrading.
All of the variable types are accessible via:
Any AcroBasic program global variables
Parker HMI products Interact Xpress and InteractX
ComACRserver for PC applications
IEC_PLC programs as direct variables or thru function blocks (9600,9630,9640 only)
EtherNet/IP
Parameter Range | ACR Data type | IEC Data Type | Retained | Notes | ||
ACR9xx0 | ACR7xx0 | IPA, AriesCE | ||||
P0-P4095 | 64-Bit float | REAL | BBRAM or Flash | Flash | Flash | Must be dimensioned prior to use. Dimensioning included in ACR-View Configuration Wizard |
P4100-P4103 | 32-Bit Long | DINT, DWORD | No | No | No | Each parameter contains 32 user flags (BIT128-255) |
P4156-P4159 | 32-Bit Long | DINT, DWORD | No | No | No | Each parameter contains 32 user flags (BIT1920-2047) |
P38912-P39167 | 32-Bit Long | DINT, DWORD | BBRAM | P38912-38975 saved in User RAM | P38912-38975 saved in User RAM | Available in ACR9000 OS 1.24 and greater. AriesCE OS1.13 or greater |
P39168-P39423 | 32-Bit float | REAL | BBRAM | P39168-39231 saved in User RAM | P39168-39231 saved in User RAM | Available in ACR9000 OS 1.24 and greater. AriesCE OS1.13 or greater |
BIT128-255 | Bit | BOOL | No | No | No | Also accessible as P4100-P4103 |
BIT256-511 | Bit | BOOL | X | No | No | Also accessible as P4104-P4111 |
BIT1920-2047 | Bit | BOOL | No | No | No | Also accessible as P4156-P4159 |
User Variables-HMI
Tag addressing for variables follow the basic pattern of Channel.Device. Pxxxx for parameters and Channel.Device. BITxxxx
When creating the tag Data Type can be left as Default. The driver will assign the correct type automatically
64-bit floats (P0-P4095) will be sent to and from the HMI as 32-bit floats which can result in a loss of precision in some cases.
User Variables-ComAcrServer
The ComACRServer library supports controller communications to PC applications in VB, C++, .Net and Labview.
Methods included in the ComACRServer allow for reading and writing of parameters individually or in blocks:
SetFlag,SetParmFloat,SetParmLong,SetParmLongMask,GetACRCustom,GetACRGroup,GetACRMemory,GetParmAddr