750-454 [2 AI 4-20 mA, Differential Inputs]
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11
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
Approvals (cf. Chapter 2.2 of the Coupler/Controller Manual)
C
UL
US
(UL508)
ABS (American Bureau of Shipping)
BV (Bureau Veritas)
DNV (Det Norske Veritas)
Cl. B
GL (Germanischer Lloyd)
Cat. A, B, C, D
KR (Korean Register of Shipping)
LR (Lloyd's Register)
Env. 1, 2, 3, 4
(only for 750-454, /000-200)
NKK (Nippon Kaiji Kyokai)
RINA (Registro Italiano Navale)
(only for 750-454)
C
UL
US
(UL1604)
Class I Div2 ABCD T4A
KEMA
II 3 G EEx nA II T4
Conformity Marking
More Information
Detailed references to the approvals are listed in the document "Overview
Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM
ELECTRONICC Tools and Docs (Item-No.: 0888-0412)
or in the internet under:
www.wago.com
!
Documentation
!
WAGO-I/O-SYSTEM 750
!
System Description
2.1.1.7 Process Image
The analog input module 750-454 transmits 16-bit measured values and
8 optional status bits per channel.
The digitalized measured value is transmitted in a data word (16 bits) as input
byte 0 (low) and input byte 1 (high) into the process image of the coupler /
controller.
This value is represented with a 12 bit resolution on bit B3 ... B14.
From the manufacturing number |32|02|XX|XX| onwards, the status
information included in the three least significant bits (B0 ... B2) can be
parsed in the event of an error
Bit B0 = 1 is set when the range of measurement is overranged.
Bit B0 and B1 = 1 are set in case of measurement range underflow or broken
wire. For modules having a previous manufacturing number, the last 3 bits are
not parsed.
