BEI Sensors Serial to Parallel Converter Module - Manual

Electronic Modules
Divide-By Module BEI Sensors
7230 Hollister Avenue
Goleta, CA 93117
www.beisensors.com
Tel: 800-350-2727
Fax: 805-968-3154
Specification No.:02086-001
Rev 10-13
Electronic Modules
Serial to Parallel Converter for Absolute Encoders BEI Sensors
BEI’ s serial-to-parallel converter module takes serial data from any BEI Serial Synchronous Interface ( S3 ) or RS - 422 Interface ( S1 ) encoders and converts
it to a parallel output. This eliminates the high cost and noise susceptibility of long, parallel cable runs, enabling the simplicity of a serial output encoder
and a low cost twisted pair cable to interface with a standard PLC or controller. The bright LED indicators give visual status for deserialization, testing and
troubleshooting.
Serial input, either
SSI or RS-422 is easily selectable by a Format Select terminal directly on the board. In SSI mode, the on-board clock generates pulses
to signal the encoder to provide data. Data is received serially and converted to a parallel format. Clock frequency is selectable by a Speed Select terminal,
again directly on the board. For 100 feet or less, the 1.25 MH z mode can be used and for longer distances, up to 500 feet, a 200 k H z rate is available.
In RS-422 mode, data is received asynchronously from the encoder and converted to a parallel format. Speed Select input is used to set the baud rate: 19.2
k B aud for most applications, up to 500 feet; 115.2 k B aud for shorter runs below 100 feet.
See the BEI specifications for Serial Synchronous Interface ( S3 ) and RS-422 for additional specifications, data format information and timing diagrams.
The module accepts inputs from 5 to 28 VDC and provides three output options: V out = V in; V out = 5 V ; and V out = O pen C ollector. The compact DIN rail
package is 105 mm wide, 78 mm high and only 45 mm high and mounts to standard DIN Rail, EN 50 022, 35 mm X 7.5 mm, included with the module.
Features:
• SSI OR RS422 SELECTABLE ON BOARD
• TWO TRANSMISSION RATES TO ACCOMMODATE LONG
CABLE RUNS
• HIGH NOISE IMMUNITY
• CAN BE USED FOR SYSTEM TROUBLESHOOTING
• SAVES INSTALLATION COSTS
• COMPACT PACKAGE
Output BEI Model Number BEI Part Number
5 - 28 Volts EM-DR3-SP-5-TB-28V/V 60007-001
5 Volts EM-DR3-SP-5-TB-28V/5 60007-002
Open Collector EM-DR3-SP-5-TB-28V/OC 60007-003
Ordering Information:
Controller Side: Encoder Side:
Pin Description Notes
D14
thru
D0
Parallel Data
Outputs
For the SSI selection under pin FMT, data
is MSB justified.
For the RS422 selection under pin FMT,
data is LSB justified.
DVD Data Valid
Logic LO = Data Valid
Logic HI = Data not valid (transitioning)
FMT Format Select
Logic HI (N/C) = SSI
Logic LO (0V) = RS422 (Asynchronous)
EN Output Enable
Logic HI (N/C) = Output active
Logic LO (0V) = Inactive (High Impedance)
SPD Speed Select
SSI: Logic HI (N/C) = 1.25 MHz
Logic LO (0V) = 200kHz
RS422: Logic HI (N/C) = 19.2 kBaud
Logic LO (0V) = 115.2 kBaud
0V
Supply
Common
Logic LO available for format and speed
selections
NOTE: On Format, Enable and Speed selects, internal 10KΩ pull-ups to Vs provide default
Logic HI
Pin Description Notes
0V
Supply
Common
Connect either 0V pin to power supply
common. This should be the same supply
common as used on the encoder.
0V
Supply
Common
Connected internally – see note above
Vs Supply Voltage Provide 5 to 28 volts supply.
D - Data minus Connect to Data – line from encoder
D + Data plus Connect to Data + line from encoder
CL - Clock minus
Connect to Clock - line from encoder (SSI
only). If using RS422, then N/C
CL + Clock plus
Connect to Clock + line from encoder (SSI
only). If using RS422, then N/C
DIR N/C Leave this disconnected
NOTE: LED indicators on key data and control lines (Logic HI = Red, Logic Lo = Green)