Access Control
Proposal for the new virtual device: access request
General
As Access request device are all devices named, which deliver similar data information and do not need interaction. Part of that devices are e. g.:
- RFID reader (transponder cards)
- Chip card, smart card
- Barcode reader
- Fingerprint sensor
- Voice detector
This devices can read different media. Every media is assigned one channel or every transponder type is assigned one channel.
There are two kinds of operating modes:
- Continuous reading: It is tried to search for a media continuously. If there is one found this event is signalized with a PDO and the data is provided in the data object. At the same time the timer for the upload timeout is running. At this time the searching for a media is stopped. After releasing the data object the searching is started again.
- One time read: It is only tried to search for a media only one times. The upload timeout does not have any meaning at this mode (the timeout is infinite).
The processing of the data from the device is not part of the specification (e. g. data base, signals to lift controller).
Messages
Message from device (PDO - same like a virtual input)
Upload request: Device has detected media (e. g. transponder card found):
Upload-Timeout has expired or data object was cleared:
Messages to device (PDO - same like virtual output)
Upload acknowledgement:
Data:
With a set acknowledge bit the data object is cleared.
Property:
| 0 | Default | Continuous reading |
| 1 | Continuous | Continuous reading |
| 2 | Impulse | One time reading |
| 3 .. 7 | .. | reserved |
Access device objects
Device Configuration
Object description
| Index | 61B0h |
| Name | Device Configuration |
| Object Code | Array |
| Data Type | Unsigned16 |
| Category | Mandatory |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Upload timeout in ms |
| Entry Category | Mandatory |
| Access | rw |
| PDO Mapping | no |
| Value Range | Unsigned16 |
| Default value | 1000 |
Value definition
An upload timeout of zero means timer disabled. The timer is only used in continuous mode.
Channel Type ID
Object description
| Index | 61B1h |
| Name | Channel Type ID |
| Object Code | Array |
| Data Type | Unsigned32 |
| Category | Mandatory |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Type ID |
| Entry Category | Mandatory |
| Access | rw |
| PDO Mapping | no |
| Value Range | Unsigned32 |
| Default value | no |
| ... |
Value definition
Main Type definition
| Description | |
| Channel disabled | |
| RFID | |
| Reserved | |
| Manufacture specific |
Sub Type definition if Main Type = 1 (RFID)
| Description | |
| EM4001/EM4002/EM4101 | |
| EM4050 | |
| Reserved |
Features
| Description | |
| Reserved |
Optional
Manufacture specific
Channel Type Info
Object description
| Index | 61B2h |
| Name | Channel Type Info |
| Object Code | Array |
| Data Type | Visible string |
| Category | Mandatory |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Type |
| Entry Category | Mandatory |
| Access | ro |
| PDO Mapping | no |
| Value Range | Visible string |
| Default value | no |
| ... |
Channel Activation And Commands
Object description
| Index | 61B3h |
| Name | Channel Activation And Commands |
| Object Code | Array |
| Data Type | Unsigned32 |
| Category | Mandatory |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Activation and Commands |
| Entry Category | Mandatory |
| Access | rw |
| PDO Mapping | no |
| Value Range | Unsigned32 |
| Default value | no |
| ... |
Value definition
| Description | |
| Search command: 0 = disable, 1 = continuous, 2 = one time reading, 3 = reserved | |
| Delete data object: 0 = no action, 1 = delete data object | |
| Reserved |
Channel Data
Object description
| Index | 61B4h |
| Name | Channel Data |
| Object Code | Array |
| Data Type | Domain |
| Category | Mandatory |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Data |
| Entry Category | Mandatory |
| Access | rw |
| PDO Mapping | no |
| Value Range | Domain |
| Default value | no |
| ... |
Value definition
Is there no data available the length of the object is zero.
The object is cleared when:
- the acknowledge bit in the upload acknowledgement PDO is set, or
- the channel is deactivated, or
- the upload timeout is expired, or
- in the channel command bit 2 is set
Channel Data Read/Write Start Address (optional)
Object description
| Index | 61B5h |
| Name | Channel Data Read/Write Start Address |
| Object Code | Array |
| Data Type | Unsigned32 |
| Category | Optional |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Data Read/Write Start Address in bytes |
| Entry Category | Optional |
| Access | rw |
| PDO Mapping | no |
| Value Range | Unsigned32 |
| Default value | 0 |
| ... |
Value definition
With this object an offset in bytes to the beginning of the data can be set for reading or writing.
Channel Data Read/Write Length (optional)
Object description
| Index | 61B6h |
| Name | Channel Data Read/Write Length |
| Object Code | Array |
| Data Type | Unsigned32 |
| Category | Optional |
Entry description
| Sub-Index | 00h |
| Description | Highest sub-index supported |
| Entry Category | Mandatory |
| Access | c |
| PDO Mapping | no |
| Value Range | 01h .. FEh |
| Default value | 01h |
| Sub-Index | 01h |
| Description | Channel 1 Data Read/Write Length in bytes |
| Entry Category | Optional |
| Access | rw |
| PDO Mapping | no |
| Value Range | Unsigned32 |
| Default value | 0 |
| ... |
Value definition
With this object the length in bytes can be set for reading or writing the data object.
A data read/write length value of zero means all available bytes.
The first proposal of RSbySCHAEFER could be found here: