speedy
serial port connections
continued...
Name
EIA485 name Modbus name
Description
A
A or Data
−
D0
Inverting Pin
B
B or Data +
D1
Non-Inverting Pin
C
SC or Data 0V
Common
Common Reference
A
and
B
must share a single twisted-pair.
C
may use one or both
conductors in another pair. Do NOT pair
C
with other signals.
EIA485 Common Reference is required. It is named
C
so that it is not
confused with other common, ground or shield connections.
Correct multipoint topology is daisy-chain or trunk with device at each
end and additional devices on short stub branches. Star, ring, or
extended branch topologies are NOT recommended.
Connect line termination between
A
and
B
at both physical ends of a
ModbusRTU network, typically 150
Ω
, 0.5W or for networks with line
polarization, 120
Ω
, 0.25W and 1nF, 10V cap in series. Do NOT provide
line termination on any network with an
Optidrive
.
Drive setup
speedy
model
Supported
drive
Required drive settings
Related drive
settings
dw220
Generic
Baud-rate, framing
Serial loss behavior
dw222
OptidriveE2
P-36; Address = 1,
Baud rate= 115.2Kbps
P-36, Comms Loss Trip
Enable
dw223
OptidrivePlus
P2-26, Baudrate = 115.2Kbps
P2-27, Address = 1
P2-26, T, trip or R,
ramp on serial loss
dw225
YaskawaF7
H5-01 = 1F, decimal 31
H5-02 = 4, 19.2Kbps
H5-03 = 00, No parity
H5-06 = 05, Min. delay 5ms
H5-04 Stopping Method
H5-05 Serial Fault
Detect
dw226
OptidriveHVAC P-36; Address = 1,
Baud rate= 115.2Kbps
P-36, Comms Loss Trip
Enable
dw223
Optidrive Plus
Notes
Check drive
model number
and
firmware version
.
P0-28
and
P0-29
should indicate 2.2 or higher. Model number must end in
-M
for
firmware versions prior to 3.0.
drive.web automation
speedy
HG503206beta2
www.driveweb.com
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