Infiniteq RM24100D User manual

Introduction
The RM24100D radio modem acts as a wireless serial cable replacement and can wirelessly connect various devices
together for a large range of applications. The RM24100D radio modems operate in the license free 2.4 Hz ISM
(industrial, scientific, medical) band and is capable of achieving long range line-of-sight communications up to 1km. With
its durable polymide industrial din rail mount enclosure and industrial temperature grade electronics makes the unit
perfect for industrial automation/SCADA systems and remote data acquisition. The RM24100D includes DSSS (Direct
Sequence Spread Spectrum) radio technology to ensure reliable communication in noisy environments. The RM24100D
also includes 128 bit AES encryption technology for secure wireless data transfer.
The RM24100D can operate in a peer-to-peer (no master/slave dependencies), point-to-point, point-to-multipoint,
multipoint to multipoint and repeater network topology.
Features
• Transparent wireless link. The modem acts as a serial cable replacement
• License free operation in the 2.4GHz I M (industrial, scientific, medical) band *
• Long Range – indoor/urban (+-90m/300ft), outdoor/line-of-sight (+-1km/0.6 miles). With a 2.1dBi dipole
antenna
• Durable polymide industrial din rail mount enclosure
• 8-30VDC switch mode power supply with built in 33V over voltage and reverse voltage protection
• Max transmit current of 200mA, average current while streaming data at 9600 baud approx. 50mA @ 12V
• Transmit power of 100mW (20dBm) EIRP with a 2.1dBi antenna
• D (Direct equence pread pectrum) technology for increased reliability in noisy environments
• Peer-to-peer (no master/slave dependencies), point-to-point, point-to-multipoint, multipoint to multipoint
and repeater network topology
• Easy interfacing connection via side terminals or by a standard DB9 female connector
• Built in LED’s for power, transmit, receive and signal strength indication
• R I (received signal strength indicator) to give optimum antenna placement
• RP MA (reverse polarity MA) 50 ohm antenna connection allows for remote location of antenna
• Available in R 232, R 485 and 4-wire R 422, includes a selectable built in line termination resistor
(R 485/R 422 model only)
• erial interface data rate of 1200 to 115200 bps
• Industrial operating temperature range (-40°C to 85°C)
• Uses an agency approved radio module (U FCC part 15.247 / Industry Canada (IC) / Europe (CE)) *
• IEEE 802.15.4 compliant
• Free configuration software
*Maximum transmit power output levels and local radio frequency regulator bodies must be obeyed in the country of
operation.
RM24100D
2.4GHz 100mW R 232 / R 485 / R 422 D
Radio Modem (IEEE 802.15.4 compliant)
Operating Manual – English 1.07

RM24100D operating manual Page 2
1 Installation
Connect the RM24100D unit as indicated in the following diagram. Use of an external 1A fuse is recommended.
DB9 Female Pinout (connecting cable must have a DB9 male connector):
DB9 Female Pin R 232 R 485 R 422
1 DCD
(Output from radio modem)
2 TXD (output)
( erial data exiting radio
modem)
D+ (B) RXD+ (B)
3 RXD (input)
( erial data entering radio
modem)
D- (A) RXD- (A)
4 DTR
(Input to Radio modem)
5 GROUND GROUND GROUND
6 D R
(Output from radio modem)
7 RT
(Input to Radio modem)
TXD- (A)
8 CT
(Output from radio modem)
TXD+ (B)
9 POWER
(8-30VDC)
POWER
(8-30VDC)
POWER
(8-30VDC)
Pin 1: 8V-30VDC
Power LED
(Flashing)
Optional DB9
Data Connection
Antenna Connection
Pin 2: round
Pin 3:
RS232 RTS (INPUT)
RS422 TXD- (A)
Pin 6:
RS232 CTS (OUTPUT)
RS422 TXD+ (B)
RF Receive LED
( reen)
RF Transmit LED
(Orange)
Pin 4:
RS232 TXD (OUTPUT – serial
Data exiting radio modem)
RS485 D+ (B)
RS422 RXD+ (B)
Pin 5:
RS232 RXD (INPUT – serial
Data entering radio modem)
RS485 D- (A)
RS422 RXD- (A)

RM24100D operating manual Page 3
1.1 R 485/R 422 Communications (R 485/R 422 Models only)
The RS485/RS422 protocol allows for a wired connection to be established as far as 4000ft (1200m). RS232 only allows
for a wired connection up to 100ft (30.5m). The RM24100D includes an on-board termination resistor which can be
selected by linking J1 on the main PCB inside the unit. The termination resistor is 120 Ohms.
1.2 R I (Received ignal trength Indicator) Red LED
3 LED’s on: Very strong signal (>30db fade margin)
2 LED’s on: Strong Signal (>20db fade margin)
1 LED on: Moderate Signal (>10db fade margin)
0 LED’s on: Weak Signal (<10db fade margin)
1.3 Minimum connection required for the RM24100D
Power (ALL models): (8->30V DC), round
R 232: TXD,RXD, round
R 485: D+ (B), D- (A)
R 422: TXD+ (B), TXD- (A), RXD+ (B), RXD- (A)
2 Network etup
2.1 Frequency Channel election
The RM24100D allows for IEEE 802.15.4 channel assignment which ranges from 2407.5 to 2467.5 MHz with 5MHz
spacing between channels. The most likely cause of interference for the RM24100D will be from a wireless LAN (802.11b/
g access points). If interference is detected then the RM24100D can be configured to use another channel as in the list
below. By default the RM24100D is shipped with the settings of channel 12 (0x0c). The RM24100D can handle 12
channels with 65535 modems per channel.
Center Frequency (MHz) Nominal Occupied bandwidth Channel
2410 2407.5-2412.5 12 (0x0c)
2415 2412.5-2417.5 13 (0x0d)
2420 2417.5-2422.5 14 (0x0e)
2425 2422.5-2427.5 15 (0x0f)
2430 2427.5-2432.5 16 (0x10)
2435 2432.5-2437.5 17 (0x11)
2440 2437.5-2442.5 18 (0x12)
2445 2442.5-2447.5 19 (0x13)
2450 2447.5-2452.5 20 (0x14)
2455 2452.5-2457.5 21 (0x15)
2460 2457.5-2462.5 22 (0x16)
2465 2462.5-2467.5 23 (0x17)
2.2 Network configuration
The RM24100100D can be operated in a unicast or broadcast mode.
Unicast Mode (Default): Unicast mode is the only mode that supports retries. While in this mode, receiving modules
send an ACK (acknowledge) of RF packet reception to the transmitter. If the transmitter does not receive an ACK, it will
try to resend the packet up to 3 times. For 2 modems to communicate with each other, the destination address of the
transmitter module must match the address of the receiver.

RM24100D operating manual Page 4
Unicast Network configuration:
Parameter RF Modem 1 RF Modem 2
ource Address 0x01 0x02
Destination address high 0 0
Destination address low 0x02 0x01
Broadcast Mode: Any RF modem in range will accept a packet that contains a broadcast address. In this mode receiving
modems do not send ACK’s and transmitting modems do not automatically resend packets as in the case of unicast
mode.
Broadcast Network configuration (All modems in the network must be setup as):
Destination Low Address: 0x0000FFFF
Destination High Address: 0x00000000
Peer-to-peer/ point-to-point topography (Broadcast/Unicast Mode)
Point-to-multipoint topography (Broadcast Mode)

RM24100D operating manual Page 5
Repeater mode (Utilizing two separate frequency channels)
Channel “A” Channel “B”
Cable Connection (Connect Rx to Tx, Tx to Rx and Ground to Ground)
3 Dimensional Drawings

RM24100D operating manual Page 6
4 pecifications
Frequency range 2.4 Hz ISM band (2407.5-2467.5MHz)
Protocol IEEE 802.15.4 compliant
Modulation OQPSK (Offset Quadrature Phase Shift Keying)
pread pectrum Technology DSSS (Direct Sequence Spread Spectrum)
Number of channels 12 direct sequence channels
Transmit Power 63mW (18dBm) conducted, 100mW (20dBm) EIRP with a 2.1dBi dipole
antenna (Output transmit power is configurable via software)*,**,***
Receiver sensitivity (1% Packet Error Rate) -100dBm
Range (2.1dBi dipole antenna) Indoor/urban (+-90m/300ft), outdoor/line-of-sight (+-1km/0.6 miles)
RF data rate 250 kbps
Antenna connection RPSMA (reverse polarity SMA)
Antenna impedance 50 ohms unbalanced
Antenna 2.4 Hz 2.1dBi omni-direction dipole antenna
Enclosure Material Polymide (PA 6.6)
Enclosure Color reen
Enclosure Dimensions 79mmx90.5mmx25mm (din rail mount)
Data Connection Side terminals or DB9 female
Operating Temperature Range -40°C to 85°C (14°F to 122°F) industrial temperature range
Humidity <85% non-condensing
upply Voltage 8 to 30VDC switch mode power supply with built in 33V over voltage and
reverse voltage protection
Current Consumption Approximately 200mA (@18dBm transmit power
Average current while streaming data at 9600 baud approx. 50mA @12V
Baud Rate 1200 to 115200 bps(non-standard baud rates also supported)
Agency approved radio
module
US FCC Part 15.247, Industry Canada (IC), Europe (CE)* **
R 485/R 422 Termination
resistor (R 485/R 422
models only)
Jumper selectable 120 Ohms (Jumper J1 internal on PCB)
*When operating in Europe the maximum transmit power output level must not exceed 10dBm. Additionally, European
regulations stipulate an EIRP power maximum of 12.86dBm (19mW).
**Maximum transmit power output levels and local radio frequency regulator bodies must be obeyed in the country of
operation.
***Maximum transmit power output levels and local radio frequency regulator bodies must be obeyed in the country of
operation.
5 Antenna Range
Various antennas can be used to increase/enhance the range of the radio modems. Below is an indicative drawing of
various antennas and there ranges/directions of propagation.

RM24100D operating manual Page 7
6 Agency Certifications
6.1 United tates (FCC)
The internal RF module in the RM24100D has been tested to comply with Part 15 of the FCC rules and regulations.
Important:
The internal RF module has been certified for remote and base radio applications. This module has been tested and
found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures: Re-orient or relocate the receiving antenna, Increase the separation between the equipment
and receiver, Connect equipment and receiver to outlets on different circuits, or Consult the dealer or an experienced
radio/TV technician for help.
RF Exposure
WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance
of 20 cm or more should be maintained between the antenna of this device and persons during device
operation. To ensure compliance, operations at closer than this distance is not recommended. The antenna
used for this transmitter must not be co-located in conjunction with any other antenna or transmitter.
6.2 Europe (ET I)
The internal RF Module in the RM24100D has been certified for use in several European countries.
When operating in Europe the maximum transmit power output level must not exceed 10dBm (Lowest power level
setting). Additionally, European regulations stipulate an EIRP power maximum of 12.86dBm (19mW).
7 Ordering Information
Please order according to the following code listed below.
R 232: RM24100D-RS232
R 485: RM24100D-RS485
R 422: RM24100D-RS422

RM24100D operating manual Page 8
8 Configuration oftware
Please use our free configuration software to change channel numbers, PAN IDs, destination/source addresses, RF
transmit power levels and interface data rate.
9 Warranty
This product carries a warranty for a period of one year from date of purchase against faulty workmanship or defective
materials, provided there is no evidence that the unit has been mishandled or misused. Warranty is limited to the
replacement of faulty components and includes the cost of labor. Shipping costs are for the account of the purchaser.
Note: Product warranty excludes damages caused by unprotected, unsuitable or incorrectly wired
electrical supplies, inductive loads and damage caused by unprotected communication lines, or any non
use of the equipment for which is intended.

RM24100D operating manual Page 9
10 Disclaimer
Operation of this instrument is the sole responsibility of the purchaser of the unit. The user must make themselves familiar
with the operation of this instrument and the effect of any possible failure or malfunction. The manufacturer its agents,
agencies, partners nor the like take any responsibility for the use of this equipment for any reason whatsoever and shall
not be held liable for any damages or loss whatsoever resulting out of the use of this equipment.
The manufacturer reserves the right to alter any specification without prior notice been given.
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