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OP5368 RS485
User Manual
www.opal-rt.com
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OPAL-RT Technologies, Inc. 1751 Richardson, suite 2525 Montreal, Quebec Canada H3K 1G6
© 2018 OPAL-RT Technologies, Inc. All rights reserved
Printed in Canada
Published by
www.opal-rt.com
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OP5368 RS485 Module
BiSS
OP5368 RS485 MODULE
DESCRIPTION
The OP5368 is designed to provide OPAL-RT simulators with RS485 signals to provide our customers
with greater flexibility and connectivity by allowing them to connect their RS485 signals to OPAL-RT’s
standard DB37 connector.
The OP5368 is available in standard format or with either Endat 2.2 or BiSS communication protocols.
• OP5368 RS485 8 channel, bidirectional
• OP5368K1 EnDat Kit, 4 x EnDat 2.2 interfaces to connect absolute digital position encoders
• OP5368K2 BISS-C Kit, 4 x BiSS-C interfaces to connect digital position encoders
ENDAT 2.2
The EnDat 2.2 interface is a digital, bidirectional interface standard from Heidenhain to connect
absolute digital position encoders. The EnDat 2.2 interface is a pure serial digital interface based on
RS-485 standard.
The device only requires four signal lines. Two lines are for the bidirectional differential data (DATA+ and
DATA-) and are transmitted in half-duplex mode. The other two lines are for the differential clock signal
(CLOCK+ and CLOCK-)
endat specifications
• Configurable encoder bus speed: 100kHz to 8MHz (in 200kHz increments)
• Clock frequency of 16 MHz up to 20-m and 8 MHz up to 100-m cable length
• Encoder DC supply (must be provided externally): 4 to 14V
• Absolute position encoder: single turn/multi-turn
• Configurable encoder position refresh rate
• Configurable encoder accuracy (bit width)
• Number of simultaneous encoders: 4
• Cable delay compensation
• Recovery time management (Tm, Tr, Tst)
• NOTE: The OP5368 does not supply power to the encoder. External power must be supplied to the
encoder.
BISS
BiSS is hardware compatible to the industrial standard SSI (Serial Synchronous Interface) :
biss specifications
• Single turn/multi-turn encoder
• Configurable encoder resolution: 8 to 40 bits
(single turn = number of bits for the position, multi turn = sum of number of bits of position and
revolution count)
• Configurable first transmission bit (MSB or LSB)
• Adjustable clock pulse frequency (62.5kHz - 1.5MHz)
• Position update rate up to 25kHz (master)
OP5368 User Manual OPAL-RT Technologies 3
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OP5368 RS485 Module
BiSS
architecture
OPAL-RT SIMULATOR
FPGA
Motor Model
(Speed, position)
Endat 2.2
OP5368
RS485
Controller
ECU
typical application diagram
3V3
RX_0
FPGA
DIRECTION_0
SIDE
TX_0
Figure 1: Architecture example
8x BIDIRECTIONAL RS485 CHANNELS
3V3
120 Ohm
1/2W
10 K
OP5368 typical application diagram
CH_0_P
CH_0_N
USER
SIDE
4 OPAL-RT Technologies OP5368 User Manual
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connector pin assignments
DB37 connectors are divided as follows: A = channels 16 to 31, B = channels 0 to 15.
OP5368 RS485 Module
SPECIFICATIONS
DB37
Connector
1B +IN00 CLK0+ DATA0+
2B +IN01 DATA0+ CLK0+ 21B -IN01 DATA0- CLK03B +IN02 CLK1+ DATA1+ 22B -IN02 CLK1- D ATA 1 4B +IN03 DATA1+ CLK1+ 23B -IN03 DATA1- CLK15B +IN04 CLK2+ DATA2+ 24B -IN04 CLK2- D ATA 2 6B +IN05 DATA2+ CLK2+ 25B -IN05 DATA2- CLK27B +IN06 CLK3+ DATA3+ 26B -IN06 CLK3- D ATA 3 8B +IN07 DATA3+ CLK3+ 27B -IN07 DATA3- CLK39 N/A 28 N/A
10 N/A 29 N/A
11 N/A 30 N/A
12 N/A 31 N/A
13 N/A 32 N/A
14 N/A 33 N/A
DB37
Channel
Endat
Pinout
BiSS
Pinout
00+
01+
02+
03+
04+
05+
06+
07+
08+
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
19
1
20
-03
-04
-05
--06
-
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
37
-00
-01
-02
DB37
Connector
DB37
Channel
Endat
Pinout
20B -IN00 CLK0- D ATA 0 -
07
08
15 N/A 34 N/A
16 N/A 35 N/A
17 N/A 36 N/A
18 N/A 37 N/A
19 N/A N/A
Table 1: Pin Assignments
SPECIFICATIONS
BiSS
Pinout
Product name OP5368, OP5368K1, OP5368K2
Part number 126-0579, 410-0118, 410-0119
Product type Type B mezzanine board
Number of channels 8, bidirectional
Dimensions 18.8 x 16.4 cm (7.4 in x 6.46 in)
I/O connector DB37F
Operating temperature 10 to 40 ºC (50 to 104ºF)
Storage temperature -55 to 85ºC (-67 to 185ºF)
Relative humidity 10 to 90%, non condensing
Maximum altitude 2,000 m (6562 ft.)
OP5368 User Manual OPAL-RT Technologies 5
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OP5368 RS485 Module
SPECIFICATIONS
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CONTACT
Opal-RT Corporate Headquarters
1751 Richardson, Suite 2525
Montréal, Québec, Canada
H3K 1G6
Tel.: 514-935-2323
Toll free: 1-877-935-2323
Technical Services
www.opal-rt.com/support
:
Note
While every effort has been made to ensure
accuracy in this publication, no responsibility
can be accepted for errors or omissions. Data
may change, as well as legislation, and you are
strongly advised to obtain copies of the most
recently issued regulations, standards, and
guidelines.
This publication is not intended to form the
basis of a contract.
UM18-47326 RVN 1.0
12/2018
© Opal-RT Technologies Inc.
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