Schneider Electric LUFP7 user manual Content of the Gateway’s Dpram Memory, Input Data Memory Area

10. Appendix C: Default Configuration

10.2. Content of the Gateway’s DPRAM Memory

The LUFP7 gateway’s DPRAM memory contains all of the data exchanged between the gateway and the 8 TeSys U motor starters, as well as two special registers only exchanged between the gateway and the Profibus-DP master (words used for managing the downstream Modbus network).

The flow of data exchanged between the TeSys U motor starters, the gateway and the Profibus-DP master is shown below, in order to highlight the role of the gateway’s memory in these exchanges:

TeSys U motor starters

c d e

j

Outputs

Modbus

Inputs

LUFP7 Gateway

OUTPUT data memory zone

INPUT data

memory zone

	Profibus-DP master
Outputs	(TSX 57353 + TSX PBY 100)
Profibus-DP
Inputs

N.B.: The total number of input and output bytes should be less than or equal to 416 bytes. It is therefore not possible to configure both the maximum number of input bytes and the maximum number of output bytes, which are both equal to 244 bytes.

10.2.1. Input Data Memory Area

The gateway has 244 input bytes. Only the first 32 bytes are used. Byte 12#0012 is used for adjusting the following 16-bit data, so that they can be aligned on even addresses, and for obtaining a total size of 32 input bytes. One should therefore configure only one 32-byte input/output module using a Profibus-DP configuration device such as SyCon.

Service	Address	Size	Description
Managing the downstream Modbus network	16#0000	1 word	Gateway status word
	16#0002	1 word	Value of the motor starter c status register
Periodic communications	16#0004	1 word	Value of the motor starter d status register
	16#0006	1 word	Value of the motor starter e status register
—	16#0008	1 word	Value of the motor starter f status register
Monitoring of	16#000A	1 word	Value of the motor starter g status register
TeSys U motor starters	16#000C	1 word	Value of the motor starter h status register
	16#000E	1 word	Value of the motor starter i status register
	16#0010	1 word	Value of the motor starter j status register
——	16#0012	1 byte	Free memory location
Aperiodic communications	16#0013	1 byte	Slave no. (16#01 to 16#08)
—	16#0014	1 byte	Function number (16#03)
Reading the value of a	16#0015	1 byte	Number of bytes read (16#02)
motor starter parameter
	16#0016	1 word	Value of the parameter read (16#xxxx)
(RESPONSE)
Aperiodic communications	16#0018	1 byte	Slave no. (16#01 to 16#08)
—	16#0019	1 byte	Function number (16#06)
Writing the value of a
	16#001A	1 word	Address of the parameter written (16#xxxx)
motor starter parameter
	16#001C	1 word	Value of the parameter written (16#xxxx)
(RESPONSE)
Aperiodic communications	16#001E	1 byte	Read parameter response counter
(“Trigger bytes” for the responses)	16#001F	1 byte	Write parameter response counter
——	16#0020	1 byte	Free input area
	…	…	(212 bytes)
	16#00F3	1 byte
	16#00F4	1 byte	Unusable input area
——	…	…
			(268 bytes)
	16#01FF	1 byte

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