Process Data Combination - Siemens SIMOVERT FC Series Operating Instructions Manual

Master Drives
CBD
01/23/98
5.2

Process data combination

Process data combination includes combining setpoints as well as control bits. The transferred process data only
become effective when the used bits of the control words, the setpoints, status words and actual values are
connected through to the dual port RAM interface (Fig. 5.2).
CBD stores the process data received at permanently fixed addresses in the dual port RAM. Each process data
(PZDi, i = 1..16) is assigned a combination value (e. g. 3001 for PZD1). The combination value is also used to define
as to whether the appropriate PZDi (i = 1 ..16) involves a 16-bit or a 32-bit value (refer to Fig. 4.4).
Using selector switches (for example P554.1 = selector switch for bit 0 of control word 1), the individual bits of the
control words and the setpoints can be assigned a specific PZDi in the dual port RAM. In this case the selector
switch is assigned to the combination value associated with the required PZDi (example, refer to Fig. 5.4).
From
Process data (PZD) - setpoint channel
Master
PZD1 PZD2
PZD3 PZD4 PZD5 PZD6
STW HSW
---------------------------------------------------------------------------------------------------------------------------------------------------------
To
Process data (PZD) - actual value channel
Master
PZD1 PZD2
PZD3 PZD4 PZD5 PZD6
ZSW HIW
Fig. 5.2 Process data "wiring" for the setpoint- and actual value channels
40
5 Start-up
5.2 Process data combinationRules for PKW object processing
TM
DeviceNet Bus connector
TM
connector
DeviceNet Bus
SIMOVERT MASTER DRIVES
Dual Port RAM
E.g. P554.1 = 3001
Setpoint Channel
STW 3001
3002/3032
HSW
Bus
PZD3 3003
3004
PZD4
E.g. P443.1=3002
PZD5 3005/3035
3006/3036
PZD6
PZD16 3016
CBD
SIMOVERT Master Drive
Dual Port RAM
Actual Value Channel
(CB/TB actual values)
ZSW P694.1
P694.1
P694.2
P694.2
HIW
Bus
P694.3
PZD3 P694.3
P694.16
PZD4 P694.4
P694.5
PZD5
PZD6 P694..6
PZD16 P694.16
CBD
SIMOVERT Master Drive
Siemens AG 477 759 4070 76 J AA-74
Betriebsanleitung / Operating Instructions
STW1-Bit 0
Source
HSW
Statuses,
actual
values