
Data Type Identification
A-2
TIWAY I Gateway User Manual
A.1 Corresponding Data Types
This
appendix provides information on which Siemens PLCs are supported
by the Gateway
, and how SIMA
TIC
TI
data types correspond to those of
the host systems. Also included in this appendix are a list of features added
to the latest release of the Gateway and a list of hardware specifications.
T
able
A-1 shows the correspondence between data types configured in the
host systems and the data retrieved from SIMA
TIC TI PLCs.
T
able A-1
Data T
ype Identification
PLC Data Type Fisher
Data Type
Foxboro
Data Type
Honeywell
Data Type
V-Memory
(12 LSBs*)
N/A 12-bit Binary from
Holding Registers
N/A
WX-Memory
(12 LSBs*)
N/A 12-bit Binary from
Input Registers
N/A
Y (discrete outputs) or
C (control relays)
Digital Points Discrete Coils Digital Outputs
X (discrete inputs) N/A Discrete Contacts Digital Inputs
V-Memory Words Input Register
16-bit W
ord from
Holding Registers
Analog Outputs
WX-Memory N/A
16-bit W
ord from
Input Registers
Analog Inputs
V-Memory N/A N/A Accumulated
Value
*Least
significant bits
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