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Device Objects

Device BACnet Object Description

Dynamically creatable: no, dynamically deletable: no.

Property Name

Required

Proprietary

Writable

Property ID

Data Type

Description

OBJECT_IDENTIFIER

Yes






OBJECT_NAME

Yes






OBJECT_TYPE

Yes






SYSTEM_STATUS

Yes






VENDOR_NAME

Yes






VENDOR_IDENTIFIER

Yes






MODEL_NAME

Yes






FIRMWARE_REVISION

Yes






APPLICATION_SOFTWARE_VERSION

Yes






PROTOCOL_VERSION

Yes






PROTOCOL_REVISION

Yes






PROTOCOL_SERVICES_SUPPORTED

Yes






PROTOCOL_OBJECT_TYPES_SUPPORTED

Yes






OBJECT_LIST

Yes






MAX_APDU_LENGTH_ACCEPTED

Yes






SEGMENTATION_SUPPORTED

Yes






APDU_TIMEOUT

Yes






NUMBER_OF_APDU_RETRIES

Yes






MAX_MASTER

Yes


Yes




MAX_INFO_FRAMES

Yes






DEVICE_ADDRESS_BINDING

Yes






DATABASE_REVISION

Yes






ACTIVE COV SUBSCRIPTION

Yes






HW_VERSION


Yes


3020

Unsigned


VERSION_TYPE


Yes

Yes

3030

Unsigned


RS485_BIASING


Yes

Yes

3045

Unsigned

MINI IP modules only with HW_VERSION>=2.0

BAUD_RATE


Yes


3084

Unsigned


USER_BAUD_RATE


Yes

Yes

3085

Unsigned


IP_ADDRESS


Yes

Yes

3101

Unsigned


SUBNET_MASK


Yes

Yes

3102

Unsigned


DEFAULT_GATEWAY


Yes

Yes

3103

Unsigned


HTTP_PORT


Yes

Yes

3104

Unsigned


UDP_PORT


Yes

Yes

3105

Unsigned


WATCHDOG


Yes

Yes

5001

Unsigned


VALID_FRAMES_FOR_US_CNT


Yes


5101

Unsigned


VALID_FRAMES_NOT_FOR_US_CNT


Yes


5102

Unsigned


ERROR_FRAMES_CNT


Yes


5103

Unsigned


TRANSMITTED_FRAMES_CNT


Yes


5104

Unsigned


Device BACnet objects

VALID_FRAMES_FOR_US_CNT Property 5101

The property contains the number of valid frames (on the MS/TP layer) addressed to this module.

VALID_FRAMES_FOR_NOT_US_CNT Property 5102

The property contains the number of valid frames (on the MS/TP layer), which are not addressed to this module.

ERROR_FRAMES_CNT Property 5103

The property contains the number of invalid frames on the MS/TP layer.

TRANSMITTED_FRAMES_CNT Property 5104

The property contains the number of transmitted frames.

UP_TIME Object (Analog Value: 0)

The object shows the time of module operation module (expressed in seconds) from the last power-up or the module reset.

WATCHDOG Object (Analog Value: 1)

The object specifies the time (expressed in seconds) to watchdog reset. If the module does not receive any valid BACnet message within that time, all PRIORITY_ARRAYs will be set to null, and the PRESENT_VALUE for outputs will be set to the RELINQUISH_DEFAULT value.

This feature is useful in case of an interruption in data transmission, and if, for security reasons, output states must be set to the appropriate state in order to avoid endangering the safety of persons or the property.

The default value is 0 seconds, which means the watchdog function is disabled. To maintain the compatibility, this object is also available as the Device object property 5001.

If the watchdog is triggered, the power LED blinks with the specified sequence (3 blinks with 20 Hz frequency and 1-second pause).

FIRMWARE VERSION AND MODULE TYPE Property 3030

The property contains the type and firmware version of a module.

The low byte contains information about a type of a module in accordance with the table below:

Value

Type

8110 (0x5116)

8I

9110 (0x5B16)

8I-IP

8410 (0x5416)

8U

9410 (0x5E16)

8U-IP

8310 (0x5316)

4I4O-H

9310 (0x5D16)

4I4O-H-IP

8510 (0x5516)

4U4O-H

9510 (0x5F16)

4U4O-H-IP

8610 (0x5616)

4U4A-H

9610 (0x6016)

4U4A-H-IP

8210 (0x5216)

4O-H

9210 (0x5C16)

4O-H-IP

8710 (0x5716)

4TO-H

9710 (0x6116)

4TO-H-IP

5010 (0x3216)

MIX18

5110 (0x3316)

MIX38

5210 (0x3416)

MIX18-IP

5310 (0x3516)

MIX38-IP

Module type value assignement

The high byte contains a module firmware version multiplied by 10.

Example:

The property 3030 has a value of 1281010 = 0x320A16. It means that it is a MIX18 module (0x32) with a firmware version 1.0 (0x0A16 = 1010).

Setting the property 3030 according to the table below enables 1 of 4 available actions: reset module, reload settings, set to default, and enter the bootloader.

Value

Action

511

Reset

767

Reload settings

1023

Set to default

1279

Enter the bootloader

Device actions

RS485_BIASING Property 3045

The property allows activating RS485 biasing resistors in order to pull up voltage on the RS485 bus. The function is only available in MINI IP modules with a hardware version >= 2.0. MIX IP modules with hardware version 3.0 and up have a hardware switch for RS485 biasing under the bottom cover. For more information see installation instructions available at ismacontrolli.com.

The biasing resistors are useful in case when iSMA modules are connected to third party devices with the same RS485 bus and communication errors appear on the network.

WARNING!

Only one device in the network can have biasing resistors activated!

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