Data Groups
With few exceptions, data groups must be defined in a device template file (DTF) in order for them to be available for use on a remote device. Which data groups are defined by a device template file depends on protocol, device type, and unique configuration.
CygNet distributes sample device template files for its EIEs, each of which typically serves one or more hardware models along with applicable firmware. Therefore, the data groups described below are only those data groups defined by CygNet in sample device template file(s). Your template(s) might not include some of the data groups described below. Device template files exist to enable users to customize device configurations; however, CygNet is not responsible for changes made by users.
For information about data group definitions and device template files, see Device Template Files.
For more information about data group dependencies, see Data Group Dependencies.
Note:
- Best practice recommends that you do not perform UDC and point processing on FMS data groups. The DEIDs specified in FMS data groups are generic and use the eFMS enumeration to identify the CygNet-defined FMS items referenced in the device template file. No polling is done on these data groups — all data is coming from the native data groups. Points should be mapped to the native data groups since that is the data group that is actually processing the device data. While point processing may work on the FMS data groups, it is not supported, not tested, not consistent across EIEs, and is not recommended practice.
Modbus EFM EIE Data Groups
| Data Group Type | Usage Notes |
|---|---|
|
CfgMB |
"Configurable Modbus Datagroup" or "Configurable Data" See Configurable Modbus Data Group. |
|
Dynacard |
The "Dynagraph Card" data group enables the retrieval of dynagraph card data. See Dynagraph Card Data Group. |
|
ExStatus |
"Read Exception Status" See Read Exception Status Data Group. |
|
"Single Read-Only Coil" See Single-Element Data Group. |
|
|
"Single Read/Write Coil" See Single-Element Data Group. |
|
|
"Single Read-Only Register" See Single-Element Data Group. |
|
|
SnglRegRo2 |
"Single Read-Only 2-Byte Reg" See Single-Element Data Group. |
|
SnglRegRo4 |
"Single Read-Only 4-Byte Reg" See Single-Element Data Group. |
|
SnglRegRw2 |
"Single Read/Write 2-Byte Reg" See Single-Element Data Group. |
|
"Single Read/Write Register" See Single-Element Data Group. |
|
|
SnglRegRw4 |
"Single Read/Write 4-Byte Reg" See Single-Element Data Group. |
