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Product Description

GLT-M003-DDCM

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4.70-10.016-01-EN | 2019-12-10

Commissioning

!

CAUTION

The commissioning technician/engineer initiates remote data transmission.

Further descriptions regarding the BMS and the DDC system can be found in the project planning 
documentation.

The GLT-M003-DDCM must be configured using ModemTool version 2.1 and higher.

Dialing only in data mode: AT DT N...

When ordering the SIM card:
- When used on a DDC3000/BMS, the SIM card must not be protected by a PIN.
- Data services must be enabled; GSM service: “Mobile terminated circuit-switched data (CSD)” 
with additional data telephone number.
- SIM cards with PIN protection can be used with DDC420 and DDC4000.

When dialing the cellular network modem, an analog connection must be forced using the “N” 
prefix.

The baud rate must be set to 9600 baud on DDC3000 controllers.

The baud rate must be set to 115200 baud on DDC4000, DDC4020e, DDC4040e and DDC420 
controllers.

Checking Whether PIN Protection is Enabled for a SIM Card

!

CAUTION

SIM cards with PIN protection must not be used for DDC3000/BMS as the PIN needs to be entered 
again after a power failure. PIN protection must be deactivated using a suitable cellular phone.

You can configuration or check the modem using AT commands with a terminal program (e.g. Hyper-
Terminal or qtalk [command: qtalk -m /dev/ser1]).
Each command must be confirmed with the “Enter” key after input.

DDC4000 and DDc420 check the PIN automatically.

LED Description

Enter:

at + cPIN?

(PIN is queried)

Answer:

+ cPIN: READY

(no PIN is required in this case)

Answer:

+ cPIN: SIM PIN

(a PIN must be entered)

Enter:

at + cPIN = 0123 (PIN 0123 is entered)

LED off

Device switched off

LED lit for 2 seconds

Switch on/reset

Rapid flashing

Network search (no SIM card, no PIN entered, no net-
work found)

Slow flashing (every 2 seconds)

Logged into network

LED lit constantly

Connection

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