Emerson PACSystems RSTi-EP User Manual

User Manual Section 4
GFK-2958L May 2021
Detailed Descriptions of the Fieldbus Network Adapters 124
Configuration assembly
The CLP can be configured in such a way that the configuration assembly 0x7A (122) or 0x7B
(123) will be transmitted during connection buildup. The length of assembly 0x7A is variable
depending on the module configuration, assembly 0x7B has a fixed length of 400 Bytes.
Two connections using the configuration assembly 0x7B are defined in the EDS file (from
release 1.1 on).
Writing access to the data attribute of the configuration assembly is not possible during an
established connection. To change the station’s parameters during an established
connection you can use attribute 0x73 of the gateway object or of the slot objects.
Alternatively, the RSTi-EP station can be configured via the web server, as long as no fieldbus
connection is active. The configuration assembly includes an 8 byte bit mask (equivalent 64
bit) followed by the parameters of all modules. For each module containing parameters a
‘’1’’ is set at the corresponding position of the bit mask. The sequence corresponds with the
modules ‘sequence within the station, starting with byte 0, bit 0 for slot 1 (first module).
After that the parameters of modules with a 3-byte header will follow:1 byte length and 2
byte for the upper 16 bits of the module ID.
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
M 8
M 7
M 6
M 5
M 4
M 3
M 2
M 1
1
M 16
M 15
M 14
M 13
M 12
M 11
M 10
M 9
2
M 24
M 23
M 22
M 21
M 20
M 19
M 18
M 17
3
M 32
M 31
M 30
M 29
M 28
M 27
M 26
M 25
4
M 40
M 39
M 38
M 37
M 36
M 35
M 34
M 33
5
M 48
M 47
M 46
M 45
M 44
M 43
M 42
M 41
6
M 56
M 55
M 54
M 53
M 52
M 51
M 50
M 49
7
M 64
M 63
M 62
M 61
M 60
M 59
M 58
M 57
8
Parameter length of the first module that includes parameters
9
Module ID
10
Module ID
11
Parameter
…
…
Parameter length of the next module that includes parameters
Module ID
Module ID
Parameter
…
…
Parameterizing via module parameter class 0x67
Each module parameter corresponds to one attribute starting from attribute 0x65. The
number of attributes depends on the type of module. The ID of the last parameter attribute
of a module can be read via attribute 0x64. The attribute data type (USINT, UINT or UDINT)
depends on the parameter to be set. The parameter order as well as the possible values can
be found in the parameter tables within each module description.
Class 0x67 supports the services “Get_Attributes_All’’ and “Set_Attributes_All’’, so that all
parameters of a module can be written and read in one telegram. All attributes of a module
are included in these telegrams beginning with attribute 0x65. Therefore, the total length
depends on the number of attributes and the particular data types.

Emerson PACSystems RSTi-EP Specifications

General

Brand	Emerson
Model	PACSystems RSTi-EP
Category	Controller
Language	English