Details of the Implicit Exchange Objects of the T_COM_UTW_S Type IODDT for PCMCIA Cards
(Original Document)
About us
PCMCIA Card Objects
The following tables present the implicit exchange objects of the T_COM_UTW_S type IODDT which apply to Uni-Telway slave communication with PCMCIA cards.
Error Bit
The following table presents the meaning of the error bit CH_ERROR (%Ir.m.c.ERR).
Standard Symbol
Type
Access
Meaning
Address
CH_ERROR
EBOOL
R
Communication channel error bit
%Ir.m.c.ERR
Signal Objects on Input
The table below shows the meaning of the bits of the INPUT_SIGNALS word (%IWr.m.c.0).
Standard Symbol
Type
Access
Meaning
Address
DCD
BOOL
R
Data Carrier Detection signal
%IWr.m.c.0.0
RI
BOOL
R
Ring indicator signal
%IWr.m.c.0.1
CTS
BOOL
R
Ready to send signal
%IWr.m.c.0.2
DSR
BOOL
R
Data ready signal
%IWr.m.c.0.3
Address Status Objects
The following table presents the meaning of the bits of the STS_ADDR word (%IWr.m.c.1).
Standard Symbol
Type
Access
Meaning
Address
AD0_FLT
EBOOL
R
=1 no polling of the master on the slave with an address (AD0)
%IWr.m.c.1.0
AD1_FLT
EBOOL
R
=1 no polling of the master on the slave with an address (AD1)
%IWr.m.c.1.1
AD2_FLT
EBOOL
R
=1 no polling of the master on the slave with an address (AD2)
%IWr.m.c.1.2