Siemens SIMOREG DC Master 6RA7018-6DS22 - Page 171

02.00 Start-Up
SIEMENS AG 6RX1700-0AD76 7-29
SIMOREG DC Master Operating Instructions
x4
+
+1
+2
+3
Node address
of drive (P918)
Basic identifier for
PZD send (U713)
PZD Send 2 (actual values 5 to 8)
PZD Send 1 (actual values 1 to 4)
PZD Send 3 (actual values 9 to 12)
PZD-Send 4 (actual values 13 to 16)
Example of PZD Send:
P918 = 1 This setting assigns identifier 200 to the first 4 send PZDs,
U713 = 196 identifier 201 to the second 4 send PZDs, etc.
How received data are utilized by the drive or which data are to be sent by the drive is determined
by connectors (see Function Diagrams, Section 8 "Data exchange with a technology board or the
1
st
communication board" or "Data exchange with the 2
nd
communication board").
3 different modes of COB transmission can be selected in CB parameter 5 (U715):
U715 = 0 Actual values are transmitted only on request (Remote Transmission
Requests)
U715 = 1 to 65534 Actual values are transmitted after the set time [ms] or on request
(Remote Transmission Requests)
U715 = 65535 Actual values are transmitted if the values have changed (event) or on
request (Remote Transmission Requests). This option should only be
used in cases where values seldom change so as to prevent excessive
bus loading.
Structure of a telegram for PZD data exchange:
The telegram consists of the following data words:
Identifier
ID
Process data word 1
PZD1
Process data word 2
PZD2
Process data word 3
PZD3
Process data word 4
PZD4
ID is the CAN identifier that is defined for the COB in question by parameterization.
PZDx are process data words
Example of a PZD setpoint telegram:
Using the receive identifier of the above example
Receive identifier 100
d
0064
h
1. Setpoint 40063
d
9C7F
h
control word 1
2. Setpoint 8192
d
2000
h
speed setpoint 50%
3. Setpoint 123
d
007B
h
4. Setpoint 0
d
0
h
Using the CAN BusAnalyser++ from Steinbeis, the setpoint data appear as follows (data field
length = 8 bytes, low and high bytes are shown swapped round):
Identifier Data field
64 00 7F 9C 00 20 7B 00 00 00
ID PZD1 PZD2 PZD3 PZD4