Data Sheet

Table Of Contents
Coupler - Reference manual
RM 13
Version 1.2
READ_STATUS
Use
This command is used to get coupler parameters (communication speed…).
Prototyping
" Command sent : F2h
" Command type : ISO out
Host
80h F2h P1 P2 01h
Coupler
F2h
Read
bytes
90h 00h
Parameters
P1: type of parameter to read
b7 - b2 b1 - b0
0 (RFU)
Parameter
location
b1-b0 : Parameter location
$ 00 : Parameter value is read in coupler’s EEPROM (setting when power
on)
$ 01 : Coupler’s I/O
$ 10 : Reserved for Future Use
$ 11 : Parameter value is read in coupler’s RAM (current setting)
P2: set the parameter address to read
Valid values for P2 according to P1 value:
$ EEPROM: 00h to FFh.
$ I/O: 05h and 07h.
$ Parameter: 50h to 6Fh.
Response : byte value at the transmitted address + status word
Note: When reading the I/O, the Read byte returned indicates the IN1, OUT1, OUT2 pin
states as follows: (OUT2P is connected to VDD via a 1kÙ- resistor).
I/O Addressb7b6b5b4b3b2b1b0
05h : Output----OUT2OUT1--
07h : Input-------IN