Ashcroft 101B224-06 User manual

Ashcroft Inc. 250 East Main Street, Stratford, CT 06614 USA
Tel: [phone], Fax: [phone] www.ashcroft.com
All sales subject to standard terms and conditions of sale.
© 2021 Ashcroft Inc. 2021 I&M - 10/21
Installation and Maintenance
Instructions for Serial
Communication Adapters

Serial Communication Adapters Instruction Manual
2
Disclaimer
The information contained in this document is
subject to change without notice. Ashcroft makes
no representations or warranties with respect to
the contents hereof, and specifically disclaims
any implied warranties of merchantability or
fitness for a particular purpose. See Warranty
Information and Terms & Conditions on
www.ashcroft.com for complete details.
•Read complete instructions prior to installation
and operation of the meter.
•Risk of electric shock or personal injury.
•These products are not recommended for life
support applications or applications where
malfunctioning could result in personal injury or
property loss. Anyone using these products for
such applications does so at his/her own risk.
Ashcroft, Inc. shall not be held liable for damages
resulting from such improper use.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Ashcroft, Inc. warrants these products against
defects in material or workmanship for the specified
period under “Specifications” from the date of
shipment from the factory. Ashcroft’s liability under
this limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms & Conditions
on www.ashcroft.com for complete details.
Registered Trademarks
All trademarks mentioned in this document are the
property of their respective owners.
© 2020 Ashcroft, Inc.
All rights reserved.
Introduction
Ashcroft provides an assortment of serial
communications adapters and converters to enhance
the utility of its products. These external devices
connect to the RJ11 / RJ45 header at the back of the
instrument and allow the meter to communicate over
RS-232, RS-485 or USB.
Ordering Information
Model
Description
101B224-06
RS-232 Adapter
101B224-07
RS-485 Adapter
101B224-08
USB Serial Adapter
101B224-09
USB to RS-232 Non-Isolated Converter
DProM
DProM Software for DM61 meters.
Pre-loaded to meter.
Accessories
Model
Description
101B224-01
DIN rail mounting kit for two devices

Serial Communication Adapters Instruction Manual
3
Table of Contents
Introduction..........................................................................................................2
Ordering Information...........................................................................................2
Specifications.......................................................................................................4
General (All).....................................................................................................4
101B224-06 RS-232 Adapter...........................................................................4
101B224-07 RS-485 Adapter...........................................................................4
101B224-08 USB Adapter................................................................................4
101B224-09 USB to RS-232 Converter...........................................................4
USB Drivers for Serial Communications Adapters......................................4
DIN Rail Mounting Instructions ..........................................................................5
Serial Communications Overview......................................................................6
101B224-06 RS-232 Serial Adapter.....................................................................7
Description.......................................................................................................7
Installation........................................................................................................7
Connections.....................................................................................................7
101B224-07 RS-485 Serial Adapter.....................................................................8
Description.......................................................................................................8
Installation........................................................................................................8
Connections.....................................................................................................8
101B224-08 USB Serial Adapter.........................................................................9
Description.......................................................................................................9
Installation........................................................................................................9
101B224-09 USB to RS-232 Converter...............................................................9
Description.......................................................................................................9
Installation........................................................................................................9
Troubleshooting.................................................................................................10
Table of Figures
Figure 1. DIN Rail Clips Mounted to Expansion Module..................................5
Figure 2. Hinge & Latch End of DIN Rail Clip....................................................5
Figure 3. DIN Rail Clips Mounted to Module .....................................................5
Figure 4. Examples of Clips Mounted to Modules............................................5
Figure 5. Mounting the DIN Rail with 2 #10 Pan Head Screws ........................5
Figure 6. Examples of Modules Mounted to DIN Rail......................................5
Figure 7. Snapping the Module to the DIN Rail.................................................5
Figure 8. Typical Installation of DIN Rail Mounted Devices.............................5
Figure 9. General Four-Wire Network Connections..........................................6
Figure 10. General Two-Wire Network Connections ........................................6
Figure 11. RS-232 Adapter Connections ...........................................................7
Figure 12. RS-422 or RS-485 Wiring...................................................................8
Figure 13. RS-485 Two-Wire Multi-Drop Wiring ................................................8
Figure 14. Connections for 101B224-07 to Serial Converter ...........................8
Figure 28. USB Adapter Connections................................................................9
Figure 29. Connections for 101B224-09 to serial device..................................9

Serial Communication Adapters Instruction Manual
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Specifications
General (All)
Warranty
1 year parts & labor. See Warranty
Information and Terms & Conditions on
www.ashcroft.com for complete details.
101B224-06 RS-232 Adapter
Compatibility
EIA-232
Connectors
PC compatible 9-pin D subminiature
connector (DB9) and RJ45 (adapter to
meter)
Cable
6' (1.8 m) standard Cat5e cable
provided with adapter
Dimension
1.7" x 0.9" x 2.7"
(43 mm x 24 mm x 70 mm)
(W x H x D)
Distance
Adapter to:
DM61 meter: 6' (1.8 m) max;
Computer: 50' (15 m) max;
Serial interface cable not provided
Power
Powered by DM61 meter M-Link
connection
Status Indication
Separate LEDs for Power (P)
Transmit (TX), and Receive (RX).
101B224-07 RS-485 Adapter
Compatibility
EIA-485
Connectors
Removable screw terminal connector
and RJ11 (adapter to meter)
Cable
6' (1.8 m) standard Cat5e cable
provided with adapter
Dimension
1.7" x 0.9" x 3.0"
(43 mm x 24 mm x 76 mm)
(W x H x D)
Distance
Adapter to:
DM61 meter: 6' (1.8 m) max;
Computer: 3,937' (1,200 m) max
Power
Powered by DM61 meter M-Link
connection
Status Indication
Separate LEDs for Power (P),
Transmit (TX), and Receive (RX)
101B224-08 USB Adapter
Purpose
Programming (only) DM61 meter when
meter powered from AC or DC.
Compatibility
USB 1.1, USB 2.0
Connectors
RJ45, and USB Type B
Cable
One 6' (1.8 m) standard Cat5e cable
and one 3.28' (1.0 m) USB A-B Male
cable provided with adapter
Dimension
1.7" x 0.8" x 3.3"
43 mm x 21 mm x 83 mm)
(W x H x D)
Distance
Adapter to:
DM61 meter: 6' (1.8 m) max.
USB connection: 10' (3 m) max
Driver
Compatibility
Win 98/2000/ME/XP/Vista/7/8/10
Power
USB Port
Status Indication
Separate LEDs for Power (P),
Transmit (TX), and Receive (RX)
101B224-09 USB to RS-232
Converter
Compatibility
USB 1.1, USB 2.0, EIA-232
Connectors
PC compatible 9-pin D subminiature
connector (DB9) and USB Type A
Dimension
3' (91.44 cm) (Length)
Distance
USB connection: 10' (3 m) max;
RS-232 connection: 50' (15m) max
Driver
Compatibility
Win 98/2000/ME/XP/Vista/7/8/10
Power
USB port
USB Drivers for Serial
Communications Adapters
USB Drivers for serial communications adapters are
available for download from the Documentation CD
provided with every product.

Serial Communication Adapters Instruction Manual
5
DIN Rail Mounting
Instructions
The following instructions for expansion modules may be used
for mounting the converters and adapters to DIN rails.
Step 1: Mounting the DIN Rail Clips to Module
Place the expansion module on a flat surface with the bottom
surface facing up. The bottom surface can be identified as the
surface closest to the locking tab slot on the modular
connector as shown in Figure 1.
Figure 1. DIN Rail Clips Mounted to Expansion Module
Peel the protective layer off the adhesive tape on the bottom of
one of the mounting clips. With the hinge end of the clip, as
shown in Figure 2, facing the end of the module with the
communications connector, align the clip along the long (side)
edge of the module and centered lengthwise within the flat
surface of the module as shown in Figure 3.
Figure 2. Hinge & Latch End of DIN Rail Clip
Figure 3. DIN Rail Clips Mounted to Module
Firmly press down on the clip for 10 seconds. Repeat this
procedure on the opposite side. Once the clips are properly
installed, the modules with clips mounted should look similar to
one or both of the modules pictured in Figure 4. While the
adhesive is initially quite strong, this strength improves
significantly over a period of approximately 12 hours.
Figure 4. Examples of Clips Mounted to Modules
Step 2: Mounting the DIN Rail to a Surface
The expansion modules, serial adapters and serial converters
weigh approximately 1.5 oz (42 grams) each so the mounting
hardware does not need to be overly strong. We recommend
two #10 pan head screws as shown in Figure 5, but only
because they best accommodate the slots in the DIN rail. The
amount of strain the wiring might place on the module
mounting needs to be considered also. In many cases, DIN rail
with double-sided tape might be acceptable, although not
recommended in areas of high vibration or extreme hot or cold
temperatures.
Figure 5. Mountingthe DIN Rail with 2 #10 Pan Head Screws
When choosing a location to mount the DIN rail, keep in mind
that wires will be entering both ends of the modules as shown
in Figure 6. Leave enough room on either end of module to
allow for wire routing to prevent undue stress placed on the
module’s connectors and mounting clips. The DIN rail may be
mounted on any vertical or horizontal mounting surface.
Figure 6. Examples of Modules Mounted to
DIN Rail
Step 3: Mounting Modules to the DIN Rail
To mount modules to a DIN rail, first locate the approximate
desired position to place the module on the DIN rail, then hook
the hinge end of the mounting clip to the edge of the DIN rail
as shown in Figure 7. Next lower the opposite “latch end” of
the clip onto the rail. Press down on the module until the latch
end snaps in place.
Figure 7. Snapping the Module to the DIN Rail
A typical installation will look like Figure 8 once modules are
mounted to the DIN rail.
Figure 8. Typical Installation of DIN Rail Mounted Devices
Step 4: Connections
After mounting the device(s), refer to the Instruction Manual for
each module for proper connections and operation.
Hinge End Latch End

Serial Communication Adapters Instruction Manual
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Serial Communications
Overview
RS-232 and RS-485 are standard interfaces approved
by the Electronic Industries Alliance (EIA) for
connecting serial devices. In EIA terms, the device (e.g.
meter) that connects to the interface is called a Data
Communications Equipment (DCE) and the device to
which it connects (e.g. the computer) is called a Data
Terminal Equipment (DTE).
The RS-422 standard was designed to replace the older
RS-232 standard because it supports higher data rates
and greater immunity to electrical interference. RS-485
is similar to RS-422 but can support multi-point
connections per line because it uses lower-impedance
drivers and receivers.
Line drivers and receivers are used to exchange data
between two or more points (nodes) on a serial
communications network. Reliable data
communications can be difficult in the presence of
induced noise, ground level differences, and other
hazards associated with installation of a network. When
communicating at high data rates, or over long
distances in real world environments, RS-232 is often
inadequate. The differential data transmission of RS-
422 and RS-485 offers superior performance in most
applications. Differential signals can help nullify the
effects of ground shifts and induced noise signals that
can appear as common mode voltages on a network.
RS-422 was designed for greater distances and higher
baud rates than RS-232. In its simplest form, a pair of
converters from RS-232 to RS-422 (and back again)
can be used to form an “RS-232 extension cord”. Data
rates of up to 100 kbits/second and distances of 3,937'
(1,200 m) can be accommodated with RS-422.
RS-422 devices however cannot be used to construct a
true multi-point network. A multi-point network consists
of multiple drivers and receivers connected on a single
bus, where any point (node) can transmit and/or receive
data. RS-485 is an enhanced version of the RS-422
standard, which allows multiple drivers and receivers on
the same two-wire or four-wire system. The RS-485
standard specifies up to 32 drivers and 32 receivers on
a single bus, but with the introduction of “automatic”
repeaters and high-impedance drivers/receivers, this
number can be extended to hundreds of points (nodes)
on a network.
The cabling used for an RS-422 or RS-485 serial
communications network should always be a high-
quality cable such as Belden 8162 or Alpha 6203C.
A two-wire system requires two twisted pairs, and a
four-wire system requires three twisted pairs (the extra
twisted pair is needed for the signal ground).
Figure 9illustrates how to connect a general four-wire
network (a four-wire network actually contains 5 wires).
Figure 9. General Four-Wire Network Connections
Figure 10 illustrates how to connect a general two-wire
network (a two-wire network actually contains 3 wires).
Figure 10. General Two-Wire Network Connections
USB to RS-485
DO
DO
DI
DI
GND GND
RS-422/485 DEVICE
DI
DI
DO
DO
USB to RS-485
DO
DO
DI
DI
GND GND
RS-485 DEVICE
DATA
DATA

Serial Communication Adapters Instruction Manual
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101B224-06 RS-232 Serial
Adapter
Description
The 101B224-06 converts the serial output of the DM61
meter to an unbalanced, full-duplex RS-232 signal.
The RS-232 port has a female DB9 connector with pins
2 (RX output), 3 (TX input), and 5 (Signal Ground). Pins
7 (RTS) and 8 (CTS) are tied together, and pins 1 (CD),
4 (DTR), and 6 (DSR) are tied together. The adapter is
powered by the DM61 meter M-Link connection.
Baud rates are adjustable and handled by the DM61
(see the DM61 Instruction Manual for more details).
The 101B224-06 has three diagnostic LEDs: a Power
(P) LED to show when the adapter is powered properly,
a Transmit Data (TX) LED to show when the adapter is
sending data out from the PC side, and a Receive Data
(RX) LED to show when the adapter is receiving data
from the DM61 meter.
Installation
Figure 11 shows the connection of a DM61 meter to a
PC using the 101B224-06 serial adapter. The 101B224-
06 has an RJ45 connector to connect the Cat5e cable
and a PC compatible 9-pin D subminiature connector
(DB9). The DB9 can be connected directly to the PC or
by using a standard serial extension cable.
Figure 11. RS-232 Adapter Connections
Connections
A Cat5e cable is provided to connect the DM61 meter
to the 101B224-06 serial adapter.
Serial Cable
(Not Provided)
RS-232 Adapter
Cat5e Cable
(Provided)

Serial Communication Adapters Instruction Manual
8
101B224-07 RS-485 Serial
Adapter
Description
The 101B224-07 converts the serial output of the DM61
meter to balanced, full or half-duplex RS-485 signals.
The 101B224-07 has a removable screw terminal
connector for the RS-485 terminals which includes
Transmit Data (DO) and (/DO), Receive Data (DI) and
(/DI), and Signal Ground. The adapter is provided by
the DM61 meter M-Link connection.
Baud rates are adjustable and handled by the DM61
(see the DM61 Instruction Manual for more details).
The 101B224-07 has three diagnostic LEDs: a Power
(P) LED to show when the adapter is powered properly,
a Transmit Data (TX) LED to show when the adapter is
sending data out from the PC side, and a Receive Data
(RX) LED to show when the adapter is receiving data
from the DM61 meter.
Installation
Figure 12 shows the connection of a DM61 meter to a
PC using the 101B224-07 serial adapter and an RS-232
to RS-485 converter in an RS-422 network. The
101B224-07 has an RJ45 connector to connect the
Cat5e cable and a screw terminal connector to connect
to the RS-422 network.
Figure 13 shows the connection of DM61 meters with
101B224-07 serial adapters to a PC using an
RS-232 to RS-485 converter in an RS-485 network.
Figure 12. RS-422 or RS-485 Wiring
Notes:
1. Termination resistors are optional and values
depend on the cable length and characteristic
impedance. Consult the cable manufacturer for
recommendations.
2. Use shielded cable, twisted-pairs plus ground.
Connect ground shield only at one location.
Figure 13. RS-485 Two-Wire Multi-Drop Wiring
Notes:
1. Termination resistors are optional and values
depend on the cable length and characteristic
impedance. Consult the cable manufacturer for
recommendations.
2. Use shielded cable, twisted-pair plus ground.
Connect ground shield only at one location.
Connections
A Cat5e cable is provided to connect the DM61 meter
to the 101B224-07 adapter.
Figure 14 details the wiring connections from the
101B224-07 to an RS-485 serial converter for a four-
wire network.
101B224-07 to RS-485 Serial Converter
Connections
RS-485 Serial
Converter
101B224-07 RS-485
Adapter
Figure 14. Connections for 101B224-07 to Serial Converter
If the serial converter is configured for a two-wire
network, then the requirement to externally wire the DO
to the DI and the /DO to the /DI on the 101B224-07
screw terminal connector is needed.

Serial Communication Adapters Instruction Manual
9
101B224-08 USB Serial
Adapter
Description
The 101B224-08 USB Serial Adapter allows for direct
connection of a DM61 Series meter to the USB port of a
PC. It is intended only for programming the meter when
the meter is powered from AC or DC. Otherwise the
USB cable provided with the meter can be used.
Installation
Figure 15 shows the connection of a DM61 meter to a
PC using a 101B224-08 USB Serial Adapter.
Figure 15. USB Adapter Connections
Driver Download
USB Drivers are available for download from the
Documentation CD provided with every product.
101B224-09 USB to RS-232
Converter
Description
The 101B224-09 USB to RS-232 Converter allows for
direct connection of a serial device to the USB port of a
PC.
Installation
Figure 16 shows the connection of a DM61 meter to a
PC using a 101B224-09 USB to RS-232 Converter,
101B224-06 RS-232 adapter, and the included Cat5e
Cable.
Figure 16. Connections for 101B224-09 to serial device
Driver Download
USB Drivers are available for download from the
Documentation CD provided with every product.
USB Cable
(Provided)
USB Serial
Adapter
Cat5e Cable
(Provided)
USB to RS-232
Converter RS-232 Adapter
Cat5e Cable
(Provided)

Serial Communication Adapters Instruction Manual
10
Troubleshooting
Symptom
Check/Action
Power LED is off
101B224-06 or 101B224-07
1. Check modular cable connection
2. Check wall plug adapter output
3. Check USB connections
4. Try different USB port
5. Check USB port with other device
Meter not
communicating with
MeterView or other
programs
Check:
1. Serial adapter and cable
2. Serial protocol selected
3. Meter address and baud rate
4. MeterView address and baud rate
If only the TX (or DATA
IN) data status LED is
flashing when serial
communications
attempted
Check:
1. Serial adapter and cable
2. Serial protocol selected
3. Meter address and baud rate
4. MeterView address and baud rate
If both data status LEDs
(TX and RX) are off
when trying to
communicate
Remove all unnecessary cables and meters. Try getting the system to work with only
one meter (to ease troubleshooting) and then expand the system one device at a time.
101B224-06:
1. Check serial cable
2. Connect the DB9 directly to the PC
3. Try a different serial port
Communications slow
Increase the baud rate
Random communication
errors
1. Increase the TX delay time
2. Decrease the baud rate
Other symptoms not
described above
Call Technical Support for assistance.

Ashcroft Inc. 250 East Main Street, Stratford, CT 06614 USA
Tel: [phone], Fax: [phone] www.ashcroft.com
All sales subject to standard terms and conditions of sale.
© 2021 Ashcroft Inc. 2021 I&M –10/21
LIM7232DI_B
10/21