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AVEVA™ Communication Drivers

Available registers in iQ-R series devices

  • Last UpdatedSep 16, 2024
  • 2 minute read

The following table lists all the registers, their item references, allowable suffixes (if any) that are available for devices part of the iQ-R series.

Register Type

Item Name

Suffix

Access

Input

X

-

Read/Write

Direct Input

DX

-

Read/Write

Output

Y

-

Read/Write

Direct Output

DY

-

Read/Write

Link Relay

B

-

Read/Write

Special Link Relay

SB

-

Read/Write

Internal Relay

M

-

Read/Write

Special Internal Relay

SM

-

Read/Write

Latch Relay

L

-

Read/Write

Edge Relay

V

-

Read/Write

Annunciator Relay

F

-

Read/Write

Timer Contacts

TS

-

Read/Write

Timer Coil

TC

-

Read/Write

Timer Value

TN

Word, BCD

Read/Write

Counter Contact

CS

-

Read/Write

Counter Coil

CC

Read/Write

Counter Value

CN

Word, BCD

Read/Write

Data Register

D

Word, BCD

Read/Write

Data Register, bit access

D

DWord, LBCD, Float

Read/Write

Special Data Register

SD

Word, BCD, DWord, LBCD, Float

Read/Write

Link Register

W

Word, BCD,DWord, LBCD, Float

Read/Write

Link Register, bit access

W

-

Read/Write

Special Link Register

SW

Word, BCD, DWord, LBCD, Float

Read/Write

Index Register

Z

Word, BCD, DWord, LBCD, Float

Read/Write

Index Register, bit access

Z

-

Read/Write

File Register

R

Word, BCD, DWord, LBCD, Float

Read/Write

File Register, bit access

R

Read/Write

Long Counter Contact

LCS

Read/Write

Long Counter Coil

LCC

Read/Write

Long Counter Current Value

LCN

Word, BCD

Read/Write

Long Timer Contact

LTS

Read/Write

Long Timer Coil

LTC

Read/Write

Long Timer Current Value

LTN

Word, BCD

Read only

Retentive Timer Contact

STS

Read/Write

Retentive Timer Coil

STC

Read/Write

Retentive Timer Current Value

STN

Word

Read/Write

Long Retentive Timer Contact

LSTS

Read/Write

Long Retentive Timer Coil

LSTC

Read/Write

Long Retentive Timer Current Value

LSTN

Word

Read only

Long Index Register

LZ

Word, BCD, DWord, LBCD, Float

Read/Write

Refresh Data Register

RD

Read/Write

CPU buffer memory

G

Read/Write

Fixed cycle area of the CPU buffer memory

HG

Read/Write

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