Shared Runtime Communication

Use this page to configure the basic mobile-network behaviour that is shared across supported runtime-based products.

Review this page only when the installation needs a specific network preference, Voice over LTE handling, or antenna selection that differs from the shared runtime defaults.
Only change communication preferences when there is a verified installation need, because unnecessary modem restrictions can reduce robustness.
This page covers modem preference, Voice over LTE, antenna selection, and SIM PIN handling. For time synchronization and update behaviour, use Shared Runtime Time and Sync.

When to Use This Page

Use this page when the controller must prefer a specific mobile-network mode.
Use it also when Voice over LTE must be enabled or disabled explicitly.
Use it also when the controller has selectable internal or external GSM antenna hardware.
Use it also when a service case requires the controller to work with a SIM card PIN.
For time zone, automatic clock synchronization, and SmartUpdate, continue to Shared Runtime Time and Sync.
For driver architecture, profiles, and supported external instrument families, use Shared Technologies > Driver Communication.

Mobile Network Preference

Use this setting to select the preferred mobile-network operating mode.

The default is normally 0 = Auto, but some hardware variants start in a narrower mode.
Only change the preferred mode when there is a known installation need.
If the preferred mode is unavailable, runtime may fall back according to the selected mode.
The response can take up to 300 seconds after a change.

Parameter Index Range Format Default Example

COMGSM

0..6

0 = Auto

1 = Prefer 2G, allow 3G

2 = Prefer 3G, allow 2G

3 = 2G only

4 = 3G only

5 = 4G only

6 = 5G only

COMGSM 1

Voice over LTE

Use this setting to control whether Voice over LTE is enabled in runtime.

Change this only when the mobile network and subscription actually support it.
If voice alarms are part of the solution, test voice delivery after changing this parameter.

Parameter Index Range Format Default Example

COMVOLTE

0..1

0 = Disabled

1 = Enabled

COMVOLTE 0

GSM Antenna

Select whether the controller should use the built-in GSM antenna or the external antenna connector.

The default is the external antenna connector.
This option is relevant only on hardware that supports both internal and external GSM antennas.
Use the external antenna option only when the hardware installation actually includes an external antenna connection.

Supported controller hardware

GSMANT supports selectable internal/external antenna mode only on VikMote AX9 turbo and VikMote AX9 encore hardware.

On other supported controller hardware, antenna mode is fixed to external. A GSMANT write does not switch to internal mode on those controllers.

Parameter Index Range Format Default Example

GSMANT

0..1

0 = Internal GSM antenna

1 = External GSM antenna connector

Note: Internal/external switching is available only on AX9 turbo and AX9 encore. On other supported controllers, runtime keeps external antenna mode.

GSMANT 1

SIM PIN Handling

Use this section when an installation uses a SIM card PIN or when the SIM card PIN must be changed or disabled.

SETDEVPIN reads, stores, or clears the device PIN used by the controller to access a PIN-protected SIM card. Use SETDEVPIN? to read the stored value, SETDEVPIN <pin> to store a 4-digit PIN, and SETDEVPIN 0000 to clear it. This command does not change the PIN state on the SIM card itself.

Parameter Index Range Format Default Example

SETDEVPIN

4 digits

SETDEVPIN?

SETDEVPIN <pin>

SETDEVPIN 0000

SETDEVPIN 1234

SETSIMPIN enables, changes, or disables the PIN code on the SIM card itself. Use SETSIMPIN <pin> to enable SIM PIN protection with the current PIN, SETSIMPIN <current> <new> to change the SIM PIN, and SETSIMPIN <current> 0000 to disable SIM PIN protection. In the two-parameter form, 0000 in the second position is the disable value, not a new SIM card PIN. On success, the controller updates the stored device PIN and schedules a clean reset. On failure, the stored device PIN is not changed and the controller does not reset.

Parameter Index Range Format Default Example

SETSIMPIN

4 digits

SETSIMPIN <pin>

SETSIMPIN <current> <new>

SETSIMPIN <current> 0000

SETSIMPIN 1234 4321

Best Practice

Do not optimize network mode prematurely. First verify signal quality and normal communication.
Use automatic network mode unless there is a clear operational reason to lock the modem to a narrower mode.
Review the antenna selection together with signal quality if the installation has optional antenna hardware.
Document whether SIM PIN protection is enabled for the installation.
Document any non-default communication choice so it can be maintained later.