26
Process Image
WAGO-I/O-SYSTEM 750
753-466 2 AI 4-20 mA S.E.
Manual
Version 1.5.0
Pos: 59 /All e Seri en (Allgemei ne Module)/Ü berschriften/Ebene 1/Prozessabbild - Ü berschrift 1 @ 4\mod_1240983067828_21.docx @ 31942 @ 1 @ 1
4
Process Image
Pos: 60.1 /Serie 750 (WAGO-I/O-SYST EM)/Prozessabbild Kl emmenbus/Anal ogei ngangsklemmen/Pr ozessabbild 750- 0466/-0454 Einl eitung - ohne Vari anten @ 30\mod_1500546933024_21.docx @ 455703 @ @ 1
The 753-466 I/O module provide 1 status byte (8 bits) and 1 data word (16 bits).
Pos: 60.2 /Serie 750 (WAGO-I/O-SYST EM)/Prozessabbild Kl emmenbus/Anal ogei ngangsklemmen/Pr ozessabbild 750- 0466/-0454 Einl eitung @ 16\mod_1373284271909_21.docx @ 125695 @ @ 1
Whether the status byte is read out via the fieldbus depends on how diagnostic
information is transmitted by the respective fieldbus or fieldbus
couplers/controllers used. In any case, the status byte can be read out using the
WAGO-I/O-CHECK commissioning tool via the service port of the fieldbus
coupler/controller.
The digitalized measured value is transmitted to the process image of the fieldbus
coupler/controller in a data word (16 bits) as an input byte 0 (low) and input byte
1 (high). This value is mapped with a resolution of 12 bits on bit B3 ... B14. Status
information, which can be evaluated for fault detection, is contained in the three
least significant bits (B0 ... B2).
If the measurement is above the measuring range, bit B0 is set = 1, and if the
measurement is below the measuring range or if a wire breaks, bits B0 and B1 are
set = 1.
Pos: 60.3 /Serie 750 (WAGO-I/O-SYST EM)/Prozessabbild Kl emmenbus/Hinweis: Prozessabbil dmapping abhängig von FBK/PFC, mit Status-/C ontroll byte @ 4\mod_1242621308640_21.docx @ 33290 @ @ 1
Mapping of process data in the process image of fieldbus systems
The representation of the I/O modules’ process data in the process image depends
on the fieldbus coupler/controller used. Please take this information as well as the
particular design of the respective control/status bytes from the section “Fieldbus
Specific Design of the Process Data” included in the description concerning the
process image of the fieldbus coupler/controller used.
Pos: 60.4 /Dokumentation allgemei n/Glieder ungselemente/---Seitenwechsel--- @ 3\mod_1221108045078_0.docx @ 21810 @ @ 1