iRZ MC52i-485GI User manual

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Contents
1.Introduction............................................................................................................................. 4
1.1.Document description..................................................................................................................... 4
1.2.Service data................................................................................................................................... 4
1.3.Safety rules.................................................................................................................................... 4
2.General Information................................................................................................................ 5
2.1.Purpose.......................................................................................................................................... 5
2.2.Set ................................................................................................................................................. 5
2.3.Features......................................................................................................................................... 5
2.4.Appearance.................................................................................................................................... 7
2.5.Interfaces....................................................................................................................................... 8
2.5.1. Terminal connector.................................................................................................................. 8
2.5.2. Power connector..................................................................................................................... 9
2.6.Modem status display................................................................................................................... 10
3.Connecting and configuring................................................................................................. 11
3.1.Connecting................................................................................................................................... 11
3.2.Control, rebooting, and connecting................................................................................................ 11
3.3.Menu mode .................................................................................................................................. 12
3.4.Programming mode...................................................................................................................... 15
4.Emergencies.......................................................................................................................... 18
4.1.Emergency 1 (incorrect input power supply).................................................................................. 18
4.2.Emergency 2 (incorrect module power supply).............................................................................. 18
4.3.Emergency 3 (GSM module failed to start).................................................................................... 18
5.Support.................................................................................................................................. 19

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List of tables
Table 2.5.1: Using terminal connector pins........................................................................................ 9
Table 2.5.2: Using connector power pins........................................................................................... 9
Table 2.6.1: Connection status LED (green)....................................................................................10
Table 2.6.2: Emergency LED (red) ..................................................................................................10
List of figures
Fig. 2.4.1. Front view......................................................................................................................... 7
Fig. 2.4.2. Back view.......................................................................................................................... 7
Fig. 2.5.1. Terminal connector ...........................................................................................................8
Fig. 2.5.2. Power connector...............................................................................................................9
Fig. 3.1. Main view........................................................................................................................... 15
Fig. 3.2. Port opening....................................................................................................................... 16
Fig. 3.3. File uploading.....................................................................................................................16
Fig. 3.4. File is uploaded.................................................................................................................. 16
Fig. 3.5. Flash-memory writing.........................................................................................................17
Fig. 3.6. Exiting program mode........................................................................................................17

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1. Introduction
1.1. Document description
This manual is intended for experienced PC users. It describes the device and the operation of
the GSM modem iRZ MC52i-485GI.
1.2. Service data
Document version Issue date
2.11 08.29.2013
Prepared by V.N. Golovin Approved by P.A. Kosolapov
1.3. Safety rules
Restrictions on the use of the device near other electronic devices:
Turn the modem off in hospitals or when located near medical equipment such as pacemakers, hearing
aids and so on. Interference for medical equipment may occur
Turn the terminal off when on an airplane. Take measures to avoid accidental turning on
Turn the modem off in the vicinity of gas stations, chemical plants, and places where demolition work is
conducted. Interference for technical devices may occur
At a close range, the modem may produce interference for television sets and radio transmitters
Maintenance requirements:
Protect the modem against external hazards (high temperatures, caustic chemicals, dust, water and so
on)
Keep the modem safe from blows, falls, and strong vibrations
Do not attempt to take apart or modify the modem on your own. Such actions will void your warranty
Note: Make sure you follow the operation manual for this device. Improper use of the device will disqualify
your warranty.

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2. General Information
2.1. Purpose
iRZ MC52i-485GI is an industrial GSM modem for receiving and transmitting data, text messages and
faxes. It is perfectly suited both for providing mobile access to the Internet and for industrial applications
including telemetry, wireless data collection from sensors, remote monitoring, control, and signaling.
The modem is equipped with a watchdog timer, which allows for an unconditional reboot of the equipment
after a specified period of time. The modem is controlled by standard AT-commands and also possesses its
own range of control commands. The device is equipped with LEDs to monitor connection status and signal for
emergency.
This modem is mainly used for remote queries on CSD channel; and it is configured accordingly when
manufactured. Please see p. 2.5.1 for more details.
2.2. Set
The set of the iRZ MC52i-485GI GSM modem includes:
iRZ MC52i-485GI modem;
Factory package
2.3. Features
Key features:
Frequency bands: GSM 900/1800 MHz;
Output power:
2W (class 4 for EGSM 850/900);
1W (class 1 for GSM 1800/1900);
GPRS class 10;
TCP/IP stack accessed via AT-commands;
MS class B;
CSD up to 14.4 kbps;
USSD;
SMS;
Fax group 3, class 1
Power:
Power supply from 9 to 28 V;
Consumption current not exceeding:
with the supply voltage of +12 V — 200mA;
with the supply voltage of +24 V — 100mA

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Physical characteristics:
Dimensions not exceeding 75х82х28 mm;
Weight not exceeding 130g;
Operating temperatures from -40°Сto +65°С;
Storage temperatures from -50°Сto +85°С
Interfaces:
TJ6-6P6C for RJ12 power connector;
Terminal connector for powering the modem, connecting the communication cable with RS485
interface;
SMA Jack (female) for connecting the GSM antenna
The device can be powered using either of the first two connectors.

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2.4. Appearance
MC52i-485GI modem is a compact device in an aluminum case. Its appearance is displayed on Fig. 2.4.1
and Fig. 2.4.2:
Fig. 2.4.1. Front view
Fig. 2.4.2. Back view
The numbers on Fig. 2.4.1 and Fig. 2.4.2 stand for:
1. Emergency LED (left, red) and Network LED (right, green)
2. SMA Jack (female) for connecting the GSM antenna
3. SIM card holder
4. SIM card holder ejector button
5. Power connector TJ6-6P6C
6. Terminal connector

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2.5. Interfaces
2.5.1. Terminal connector
This connector is used for communication with a controlling device, interface RS485. The AT-commands
are used to control the modem operation (see the module description).
Factory settings: Speed: 9600 bps, Data Bit: 8, Parity: None, Stop Bit: 1.
This modem is mainly used for remote queries on CSD channel; and it is configured accordingly when
manufactured:
ats0=1 (automatic answer)
at&c1 (set DCD line mode)
at&d0 (ignore status of the DTR line)
at+cbst=71,0,1 (select bearer service type)
ate0 (echo mode off)
Please see the external look of the connector on Figure 2.5.1:
Fig. 2.5.1. Terminal connector

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Table 2.5.1: Using terminal connector pins
Clamps Signal Purpose
1 +Vin “+” modem power supply
2 -Vin “-” modem power supply
3 SHLD “Shield” of RS485 interface
4 “B” “d-“ of RS485 interface;
inverse differential I/O
5 “A” “d+“ of RS485 interface;
direct differential I/O
Interface lines are protected by self-healing fuses and a
circuit of impulse noise suppression, as well as
overvoltage protection
6 +5V Output ”+5V” (RS485), 100mA (to power external devices)*
*For instance, it might be used to power RS485 interface of heat and electricity counters, etc.
Notes: RS485 interface is half duplex. It needs to be considered in case of data transfer. When echo is
enabled, data is sent to the modem will return. This can lead to collision. In this case we recommend to
disable echo (AT-command ate0).
2.5.2. Power connector
The connector is used to power the device.
Fig. 2.5.2. Power connector
Table 2.5.2: Using connector power pins
Pin Signal Purpose
1 + 12V The positive pole of DC supply voltage. Fused circuit and overvoltage
protection (when input voltage of over 30V is applied) and reverse polarity.
2 Not used
3 Not used
4 Not used
5 Not used
6 GND Ground

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2.6. Modem status display
LED is used to indicate the connection status. This function can be controlling by a corresponding
AT-command (AT^SSYNC=1 — LED mode on; AT^SSYNC=0 — LED mode off). By default, AT^SSYNC=1.
Table 2.6.1: Connection status LED (green)
LED mode Conditional indication
display Operation mode
Turned off ○Modem is turned off or is in the emergency
status, power saving mode, alarm mode
600ms on / 600ms off ●●●●●●○○○○○○ Modem is not logged to the network
75ms on / 3s off ●○○○○○○○○○...○Modem is logged to the network
75ms on / 75ms off /
75ms on / 3s off
●○●○○○○○○○...○GPRS connection is activated
500ms on/ 50ms off ●●●●●○Data transfer in progress
250ms on / 10s off ●●●○○○○○○○...○Sleep mode
250ms on / 250ms off ●●●○○○ Programming mode, menu mode
Permanently turned on ●Voice call, CSD
Table 2.6.2: Emergency LED (red)
LED mode Conditional indication
display Operation mode
Permanently turned on ●Invalid input voltage
0.5s on / 0.5s off ●●○○ Invalid module power supply
0.25s on / 0.25s off / 0.25s on/
1s off ●○●○○○○ GSM module has not launched

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3. Connecting and configuring
3.1. Connecting
Only individuals with specialized technical training and who have studied the product specifications are
permitted to assemble (install) the modem.
Before connecting the device, install the unlocked SIM card into the modem. The SIM card must be
connected and removed when the power is turned off. In order to install the SIM card do the following:
Eject the SIM holder by pressing the SIM card holder ejector button (Fig.2.4.1)
Place the SIM card into the SIM card holder
Insert the SIM card holder into the modem
Be careful when installing the SIM card.
Connect the GSM antenna and the commuting RS485 cable. Power the modem using the power connector
or the terminal connector (Fig.2.4.2). The frequent blinking of the green LED indicates that the modem is turned
on (Table 2.6.1). Remove the PIN code of the SIM card to complete automatic online registration. After the
registration is complete the modem goes into the operation mode and green LED blinks less frequently.
Note: GSM antenna, the commuting cables and the power supply are not included in the set.
3.2. Control, rebooting, and connecting
The modem is controlled using standard and expanded AT-commands. For more detail see AT-commands
description for the GSM module. You can find additional information and support at www.irz.net.
The modem can be rebooted using one of the following ways:
Rebooting after a given period of time (WD interval, turned off by default), setting is done in the menu
mode
By usingAT-command “AT+CFUN=1,1”
Temporary power shutdown
The modem can be turned off using one of the following ways:
By power shutdown
By using AT-command “AT^SMSO”
When modem is disabled by using AT-commands, you can use the alarm function (ALARM mode) to run
modem.
Switch-over of modem into power saving mode by using AT-command "AT+CFUN". Controlling the alarm
mode by using AT-command “AT+CALA”. For more detail see AT-commands description for the GSM module.

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3.3. Menu mode
The menu mode’s function is to change the modem’s parameters and access the statistics. In this menu,
the power of the GSM module is switched off. After leaving the menu mode automatic rebooting takes place.
The menu mode can be accessed from the operation mode. Before accessing the menu mode connect the
modem to the computer (speed: 115200 bit/sec, 8-N-1), run Hyper Terminal or a similar program to
communicate with the modem. Then remove the SIM holder (by pressing the SIM holder ejector button).
The modem will go into the menu mode:
Menu mode:
Variant XX
<P1> View statistics
<P2> WD interval=OFF
<P3> 'AT' control=OFF
<PC> Power control
<PR> Clear statistic
<PS> Change speed: auto
Variant XX is the software version
Symbols <P…> stand for control commands. A command is sent after pressing “Enter”. If an incorrect
command has been sent, the “ERROR” message appears. Entering commands is case-insensitive.
After entering the <P1> command a transition into the submenu of statistics occurs:
Statistics:
Power_Modem = XX…X
Bad_Power_Modem = XX…X
Power_Module = XX…X
Bad_Power_Module = XX…X
Start_Module = XX…X
Bad_Start_Module = XX…X
Deadlock_of_Module = XX…X
Reset = XX…X

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The modem automatically stores the number of the following situations:
Power_Modem or the number of times the modem has been turned on
Bad_Power_Modem or the number of times the modem power has deviated from the allowed
Power_Module or the number of times the power of the GSM module has been turned on
Bad_Power_Module or the number of times the GSM module power has deviated from the allowed
Start_Module or the number of the successful launches of the GSM module
Bad_Start_Module or the number of situations when the GSM module failed to launch
Deadlock_of_Module or the number of GSM module deadlocks
Reset or the number of resets.
After the statistics appears the transition to the main menu occurs.
Use <P2> command to proceed to the WD submenu:
WD interval, hour (0 - WD off, max - 255)
<Q> Quit
WD interval=
To change the reboot interval, enter a number from 0 to 255 (by pressing “Enter”). The reboot interval is set
in hours. If you need to switch off this function enter 0. Keep in mind that after the set interval expires, the
unconditional reboot of the modem will occur. In case incorrect information is entered the modem displays
“ERROR” and offers the WD submenu once again. In case correct information is entered or <Q> command is
sent a transition into the main menu takes place.
Use <P3> command to proceed to the AT submenu:
'AT' control, minutes (0 - off, max - 255)
<Q> Quit
control=
In this submenu the interval of the periodical check by the managing microcontroller of the GSM module
deadlock is set. To change the interval of the check enter a number from 0 to 255 by pressing “Enter”. The
reboot interval is set in minutes. If you need to switch off this function enter 0. In case incorrect information is
entered the modem will show “ERROR” and will offer the AT submenu once again. In case correct information
is entered or <Q> command is sent a transition into the main menu will take place.
After entering the <PC> command review the input voltage and the voltage of the module (measurement
precision 5%):
P0WER Uin=12.0 Umd=3.9
After the output a transition into the main menu occurs.

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After entering the <PR> command a transition into the submenu of clearing the statistics occurs:
Clear statistics?
<YES> YES
<Q> Quit
The accumulated statistics is cleared by the <YES> command. In case incorrect information is entered the
modem displays “ERROR” and offers the submenu of clearing the statistics once again. In case correct
information is entered or <Q> command is sent a transition into the main menu takes place.
After entering the <PS> command a transition into the menu of determining data transmission speed in the
operation mode occurs. Modem is always set to receive data. A switch to transition occurs when data to be
transmitted appears. Setting a fixed speed of data transmission eliminates errors in calculating the interval of
transmission switch. This allows minimizing pauses between transmission and reception of data and to
eliminate the disappearance of data transmission start. By default, the modem is set to determine the data
transmission speed automatically.
Menu speed:
<0> auto
<1> 115200
<2> 57600
<3> 38400
<4> 28800
<5> 19200
<6> 14400
<7> 9600
<8> 4800
<9> 2400
<10> 1200
<11> 600
<12> 300
<Q> Quit
To choose the data transmission speed enter a number between 1 and 12 (by pressing “Enter”). If you
need to switch off this function enter “0”. In case incorrect information is entered, the modem will display
“ERROR” and will offer the menu of determining data transmission speed once again. In case correct rebooting
interval is entered or <Q> command is sent, a transition into the main menu will take place.
After entering the <M> command the main menu appears.
The exit from the menu mode occurs after the SIM holder is installed back again.

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3.4. Programming mode
Program “mprog” is used to change or update software of the managing microcontroller of the modem.
Figure 3.1 shows an external view and main features:
1 – language, 2 – working with ports, 3 – working with Flash, 4 – working with EEPROM, 5 – start button,
6 – view window.
Fig. 3.1. Main view
If within 10 seconds after powering the device an update has not started, the modem will leave the
programming mode and enter the menu mode.
To change the software do the following:
1. Start the program
Close all programs, which can use the port you will connect to the modem.
2. Click the button in “Port” frame;
3. Choose the number of the COM port where the modem will be connected
4. Connect the modem (without the SIM holder) to the computer and turn on the modem;
Turn on the modem. The modem will go into the programming mode. The green LED will blink: 250ms on /
250ms off. “Open” button (not later than 10 sec once the modem was powered).

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5. Click the button (not later than 10 sec once the modem was powered) in “Port’
frame;
The device model should appear. For example see figure 3.2 – “MC52i-485” (or “BGS2-485”).
Fig. 3.2. Port opening
Then select the new firmware file to be downloaded.
6. Click the button in “Flash” frame and choose firmware file (file in “hex”-format) in
«Open file» dialog
For example see figure 3.3 – “rs485_bgs2_v4.0.hex”.
Fig. 3.3. File uploading
If the file has uploaded successfully, the program window will show message “Uploaded file:”.
Fig. 3.4. File is uploaded
7. Click the button in “Flash” frame
After this, data will be written in Flash-memory and you see such text:

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Fig. 3.5. Flash-memory writing
8. Next click the button in bottom part of program window;
This will make the modem exit from programming mode and the port will be closed.
Fig. 3.6. Exiting program mode
9. Close the program
10. Place the SIM holder into the modem
The software update is completed. The modem goes into the work mode.

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4. Emergencies
To facilitate the use of the modem, tracking and display of emergencies are provided.
4.1. Emergency 1 (incorrect input power supply)
Emergency 1 occurs when the input power supply deviates from the permissible value. The modem stops
working and it shuts down the GSM module power. A permanent red LED signals that the emergency has
occurred. The recovery is possible only when the input power supply is re-established.
4.2. Emergency 2 (incorrect module power supply)
Emergency 2 occurs when the GSM module power supply deviates from the permissible value. The modem
stops working and it shuts off the GSM module power. A red LED signals that the emergency has occurred
(0.5s on / 0.5s off). The recovery is possible only if the module power supply is re-established within 10
seconds after the emergency occurred. If within 10 seconds the module power supply remains incorrect (with a
correct input power supply), the modem goes into the waiting mode meaning that the modem’s power supply is
turned off, the emergency indication is preserved. The waiting mode can be terminated only after the power is
completely disconnected.
In case of repeated emergency, the modem should be serviced.
4.3. Emergency 3 (GSM module failed to start)
Emergency 3 occurs if the GSM module does not turn on or is absent. A red LED signal (0.25s on / 0.25s
off / 0.25s on / 1s off) turns on after a precise determination by the modem of the emergency situation
(~15 sec). The recovery is possible only after a successful launch of the GSM module. After 10 unsuccessful
attempts to launch the module, the modem goes into the waiting mode meaning that the modem’s power
supply is turned off, the emergency indication is preserved. The waiting mode can be terminated only after the
power is completely disconnected.
In case of repeated emergency after the modem is turned back on, the modem should be serviced.

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5. Support
New document versions and software are available using:
St. Petersburg
The company’s website: www.radiofid.ru
Phone number in St. Petersburg: [phone]
E-mail: [e-mail]
Moscow
The company’s website: www.digitalangel.ru
Phone number in Moscow: [phone]
E-mail: [e-mail]
Our support team is ready to assist you with any questions you might have when installing, configuring or
solving issues with our equipment.