IC-MD_17 Datasheet, PDF (27/30 Pages) IC-Haus GmbH – 48-BIT QUADRATURE COUNTER

iC-MD 48-BIT QUADRATURE COUNTE^pR^reliminary
WITH RS422 RECEIVER AND SPI/BISS INTERFACE
ACTUATOR OUTPUTS, ERROR and WARNING I/O PINS
Rev B1, Page 27/30
The pins NERR and NWARN are low active bidirec- error/warning will be read by the controller via SPI or
tional ports (open collector outputs and digital inputs). BiSS as status bits.
The inputs are used to latch an external error/warn- The instruction bits ACT0 and ACT1 (tables 42 and 43)
ing (tables 52 and 53) and makes possible that this set the value of the output pins ACT0 and ACT1.
APPLICATIONS NOTES
RS422 12 V capable inputs setup
The following figure 13 shows the resistors configuration used for a 12 V capable RS422 inputs. (see Fig. 13).
VDD
0..5.5V
APR
ANR ^-12..12V
-12..12V
BPR
BNR
-12..12V
-12..12V
CPR
CNR
-12..12V
-12..12V
4.7kΩ
R
R
4.7kΩ
1kΩ 1kΩ
1kΩ 1kΩ
4.7kΩ
R
R
4.7kΩ
1kΩ 1kΩ
1kΩ 1kΩ
4.7kΩ
R
R
4.7kΩ
1kΩ 1kΩ
1kΩ 1kΩ
RS-422 Receivers
AP AP
AP
+
AD
-
AN AN
AN
BP BP
BP
+
BD
-
BN BN
BN
CP CP
CP
+
CD
-
CN CN
CN
TPI
VDD
24-bit REF Counter
A0
B0
Z Signal
REFCNT(23:0)
Z0
COUNT
Reset
RESAB
1x48bit Counter
1x32bit Counter
1,2x24bit Counters
1,2,3x16bit Counters
A1
B1
Z
CBZ
&
Z1
1
DQ
A2
B2
AB(47:0)
CNTFLG
Figure 13: RS422 12 V capable configuration