Advantech Advantech Modem ADAM-4550 User manual
ADAM-4550
User’s Manual
Radio Modem Module
(RS-232/485 Interface)
Part no. 2000455000 2nd Edition Printed in Taiwan October 1997ADAM and the ADAM logo are trademarks of Advantech
2 ADAM-4550 User's Manual
Contents
1. Introduction..............................................
3
1.1 Built-in Intelligence.......................... 3
1.2 Features .......................................... 3
1.3 Specifications.................................. 4
2. Installation ..............................................
5
2.1 Basic Configuration......................... 5
2.2 Power Supply .................................. 5
2.3 RS-485 Communication Wiring ...... 6
2.4 Software Configuration ................... 6
2.5 Configuring ADAM-4550 ................. 7
2.6 Uploading a New Version
of Firmware .................................... 11
2.7 Using the Diagnostics Functions .... 12
2.8 Antenna Installation ........................ 12
3. Using ADAM-4550...................................
14
3.1 A Test Sample ................................ 16
4. ADAM-4550 Command Set.....................
17
4.1 Set New Configuration .................... 20
4.2 Read Configuration ......................... 22
4.3 Write Identification .......................... 22
4.4 Read Identification .......................... 23
4.5 Set Delimiter Character .................. 23
4.6 Read Delimiter Character ............... 24
4.7 Set Data Gate ................................. 24
4.8 Read Data Gate Status................... 26
4.9 Read Firmware Version .................. 26
4.10 Read Module Name ...................... 27
4.11 Uploading ...................................... 27
4.12 Send Data to Remote ................... 28
4.13 Get Error Rate Statistics............... 29
Appendix A: External Antenna Options .....
30
Appendix B: External Antenna
Wiring Diagram.....................
32
ADAM-4550 User's Manual 3
FCC Identification
MKZAZY4550MDM
FCC Warning
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in an industrial / commercial installa-
tion. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio com-
munications. Operation of this equipment in a residential area is likely to cause harmful interfer-
ence in which case the user will be required to correct the interference at his own expense. How-
ever, there is not a guarantee that interference will not occur in a particular installation.
4 ADAM-4550 User's Manual
1. Introduction
ADAM-4550is an economical, wireless RS-232/
485 converter designed to interface any bidirec-
tional RS-485 device with a control center host
computer. TheADAM-4550 can be used in data
acquisition where data sensors are inaccessi-
ble to the host computer due to wiring difficul-
ties or long distances that make wiring impracti-
cal or impossible.
1.1 Built-in Intelligence
The ADAM-4550 is equipped with an on-board
microprocessor and a radio-frequency (RF)
module that can be used to interface one host
computer with multiple RS-485 networks. Each
RS-485 network can be used to support numer-
ous data acquisition devices.
1.2 Features
•Built-inmicroprocessor
•Data transmission speeds up to 115.2 Kbps
•Built-in RS-485 line surge protection
•Softwareconfigurableaddress andbaudrate
•Easily mounted on DIN rails, panels or as a
piggyback unit.
•All communication setup information stored
on system EEPROM
•AutomaticallysetsRS-232 port to DTE/DCE
and automatic RS-485 data flow control
•Can be used as point to point or point to
points communication
•Can be operated with address or without
address
ADAM-4550 User's Manual 5
1.3 Specifications
•Transmissionspeed(bps): 300,600,1200,
2400, 4800, 9600, 19.2K, 38.4K, 57.6K,
115.2K (transmission speeds are software
configurable)
•Radio frequency : 2.442 GHz, Direct
Sequence Spread Spectrum (DSSS)
•Radio bandwidth : 22 MHz
•Radio transmission power: 100 mW nom-
inal
•Radio transmission rate: 1 Mbps
•Power requirement: Unregulated (+10VDC
to +30VDC) with protection from power re-
versals
•Case: ABS with captive mounting hardware
•Standard accessories: Nylon DIN-rail
mounting adapter, SECC panel mounting
bracket
•RS-232 interface connector: DB-9
(female)
•RS-485 interface connector: Plug-inscrew
type terminal [accepts AWG 1-#12 or 2-
#14~#22 (0.5 to 2.5 mm2) wires]
•Operating temperature: -10oto 70oC
•Power consumption : 4 W
•Communication distance: 550 ft. effective
range (under open site test with 2 dBi omni
antenna). Actual distance depends on en-
vironmental conditions, antenna type and
positioning.
6 ADAM-4550 User's Manual
2. Installation
2.1 Basic Configuration
Before installing the ADAM-4550 in an existing
network, the ADAM-4550 unit should be pre-
configured. Though all modules are initially pre-
configuredat the factory, it is recommended that
you check the baud rate settings.
Factory Default Settings:
Baud Rate: 9600 bps (both RS-232 and RS-485)
Delimiter: {
Address: 00
2.2 Power Supply
For ease of use in industrial environments,
ADAM modules are designed to accept industry
standard +24 VDC unregulated power. Modules
are certified for operation with any power sup-
ply source between +10 and +30 VDC. Power
ripplesmust be limited to5 V peak topeak, while
voltage must in all cases remain between +10
and +30 VDC. All power supply specifications are
referenced at the module connector.
Power cables should be selected according to
thenumberofmodulesconnectedandthelength
of the power lines. When using a network with
long cables, we advise the use of thicker wire to
limit the line voltage drop. In addition to serious
voltage drops, long voltage lines can also cause
interference with communication wires.
We advise that the following standard colors (as
indicated on the modules) be used for power
lines:
+Vs ð(R) Red
GND ð(B) Black
ADAM-4550 User's Manual 7
2.3 RS-485 Communication Wiring
Werecommendusingshielded-pair cableswhich
comply with the EIA RS-485 standard to reduce
interference in an ADAM network. Only one set
oftwisted-paircables is required totransmit both
DATA and RTS signals. We advise that the fol-
lowingstandardcolors (as indicated onthe mod-
ules) be used for the communication lines:
DATA+ð(Y) Yellow
DATA- ð(G) Green
2.4 Software Configuration
The ADAM-4550 comes with a setup disk that
contains software for the following:
•Baudrate configuration
•Addressconfiguration
•Statistical RF error rate retrieval
•Firmware upload tool for firmware upgrades
Note: 1. Before turning on the power and
configuring the ADAM-4550, make sure it is
connected to your host computer through an
RS-232 cable and that the host computer is
on. The ADAM-4550 will automatically detect
the cable and set itself as a DTE/DCE
according to the RS-232 port of the connected
host computer. If there is no RS-232 cable
connected to the host computer, the ADAM-
4550 will set itself as a DCE when you turn on
the power.
For RS-485 wireless transceiver applications,
the user can leave the RS-232 port opened.
The ADAM-4550 should set RS-232 as a DCE
after power is turned on.
2.ThepinINIT (pin 6)should be grounded while
you turn on the power of ADAM-4550 for config-
uration. For normal operation, just leave INIT
(pin 6) open while you turn the power on.
8 ADAM-4550 User's Manual
2.5 Configuring ADAM-4550
1. Insert the ADAM-4550 disk in drive A. Start
Microsoft Windows. From the Program
Manager, select the File menu and choose
Run. Type a:\ADAM4550 and press EN-
TER. The ADAM Configuration and Diag-
nostics window should now open.
2. You must now set the host computer’s port
configurationbeforeconfiguringyourADAM-
4550. To configure your host communica-
tion port, select the Setting... menu and
choose Local. A dialog box will open. Se-
lect the proper COM port that is connected
to the ADAM-4550 and set the baud rate to
9600. Click the OK button.
3. Connect your PC’s RS-232 serial port to
ADAM-4550’s RS-232 port. Connect the
INIT pin with the ADAM-4550’s ground pin.
Turn on the power. The unit is now in con-
figurationmode. ThegreenLEDlightshould
blink slowly.
4. You must now search your unit for its cur-
rent settings. To do this,select the Setting...
menu and choose Get. Enter a starting ad-
dress into the dialog box or use the default
start address 0. Click the OK button. The
configuration software will scan the unit for
the address by matching the unit’s address
witheachaddressnumber betweenthestart-
ing address and 255. If the unit’s address
is found, its ID address, baud rate and de-
limiter settings will be displayed.
5. You may now change the settings. To
change the configuration, select the Set-
ting... menu and choose Set. A dialog box
will open. Enter the new configuration set-
tings (new address, identification, new baud
rate, master/slave) and click the OK button.
Follow the procedure in the Search section
to get the new desired configurations.
ADAM-4550 User's Manual 9
Figure 1: Basic Connection Diagram
PC
2 RX
3 TX
7 RTS
8 CTS
4 DTR
6 DSR
5 GND
2 RX/TX
3 TX/RX
7 CTS/RTS
8 TRS/CTS
4 DSR/DTR
6 DTR/DSR
5 GND
RF
Module
DATA+
DATA-
RS-485
RF
Module DATA+
DATA-
RS-485
RS-232 Connector
DATA+
DATA-
RS-485
RS-232 ADAM-4550 ADAM-4550 ADAM-4011
Note:
The RS-232 cable does not have to be
a null-modem cable. The ADAM-4550
will automatically detect and set itself
as a DCE.
10 ADAM-4550 User's Manual
Figure 2: Pin Assignment
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