Siemens SIMATIC NET SPC 4-2 LF User manual

SIMATIC NET
PROFIBUS Controller
SPC 4®-2 LF
Manual
Contents
Introduction 1
Functional Overview 2
Pin Assignment 3
Memory Assignment 4
FLC Interface 5
DP Interface 6
ASIC Interface 7
Asynchronous Interface 8
Synchronous Interface 9
Clock Pulses 10
Processor Interface 11
Technical Specifications 12
Package 13
References 14
Addresses 15
Appendix 16
C79000-G8976-C157-3
Release 12/2006

Copyright © Siemens AG, 2001 bis 2006
Disclaimer
We have checked the contents of this manual for agreement with the hardware and software described. Since deviations cannot be precluded entirely, we canno
t
guarantee full agreement. However, the data in this manual are reviewed regularly and any necessary corrections included in subsequent editions. Suggestions fo
r
improvement are welcome.
Siemens AG
Automation and Drives
Industrial Communication
Postfach 4848, D-90327 Nürnberg
C79000-G8976-C157-3
Technische Änderungen vorbehalten.
Siemens Aktiengesellschaft Printed in the Federal Republic of Germany 2
Classification of Safety-Related Notices
This document contains notices which you should observe to ensure your own
personal safety, as well as to protect the product and connected equipment. These
notices are highlighted in the manual by a warning triangle and are marked as follows
according to the level of danger:
!Danger
indicates that death, severe personal injury will result if proper precautions are not
taken.
!Warning
indicates that death, severe personal injury can result if proper precautions are not
taken.
!Caution
with a warning triangle indicates that minor personal injury can result if proper
precautions are not taken.
Caution
without a warning triangle indicates that damage to property can result if proper
precautions are not taken.
Notice:
indicates that an undesirable result or status can result if the relevant notice is
ignored.
Note
highlights important information on the product, using the product, or part of the
documentation that is of particular importance and that will be of benefit to the user.

PROFIBUS Controller SPC 4®-2 LF
C79000-G8976-C157-3 3
Trademarks
SIMATIC®, SIMATIC NET®, SINEC®and SIMATIC NET Networking for Industry®
are registered trademarks of Siemens AG.
Third parties using for their own purposes any other names in this document which
refer to trademarks might infringe upon the rights of the trademark owners.
Safety Instructions Regarding your Product
Before you use the product described here, read the safety instructions below
thoroughly.
Qualified Personnel
Only qualified personnel should be allowed to install and work on this equipment .
Qualified persons are defined as persons who are authorized to commission, to
ground, and to tag circuits, equipment, and systems in accordance with established
safety practices and standards.
Correct Usage of Hardware Products
Note the following:
Caution
This product may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other
manufacturers which have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up,
and installed correctly, and operated and maintained as recommended.
Before you use the supplied sample programs or programs you have written yourself,
make certain that no injury to persons nor damage to equipment can result in your
plant or process.
EU Directive: Do not start up until you have established that the machine on which you
intend to run this component complies with the directive 98/37/EG.

PROFIBUS Controller SPC 4®-2 LF
4 C79000-G8976-C157-3
Correct Usage of Software Products
Note the following:
Caution
This software may only be used for the applications described in the catalog or the
technical description, and only in connection with software products, devices or
components from other manufacturers which have been approved or recommended
by Siemens.
Before you use the supplied sample programs or programs you have written yourself,
make certain that no injury to persons nor damage to equipment can result in your
plant or process.
Prior to Commissioning
Prior to commissioning, note the following warning:
Caution
Prior to startup read the relevant documentation. For ordering data of the
documentation, please refer to catalogs or contact your local Siemens representative.

PROFIBUS Controller SPC 4®-2 LF
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Contents
1Introduction..................................................................................................................... 9
2Functional Overview .................................................................................................... 11
3Pin Assignment ............................................................................................................ 15
4Memory Assignment .................................................................................................... 19
4.1 Addressing the SPC 4-2 .................................................................................... 20
4.2 Structure of the Internal RAM ............................................................................ 22
4.2.1 Overview............................................................................................................ 22
4.2.2 RAM Parameter Block ....................................................................................... 22
4.2.3 SAP List ............................................................................................................. 24
4.2.4 Data Areas in the Internal RAM......................................................................... 24
4.2.5 Addressing Using the Memory Window............................................................. 26
4.3 Assignment of the Parameter Registers............................................................ 28
5FLC Interface................................................................................................................. 33
5.1 SAP List ............................................................................................................. 34
5.1.1 Structure of the SAP List ................................................................................... 34
5.1.2 Control Byte ....................................................................................................... 37
5.1.3 Request SA........................................................................................................ 38
5.1.4 Request SSAP................................................................................................... 38
5.1.5 Access Byte ....................................................................................................... 38
5.1.6 Reply-Update-Ptr/ SDN-/DDB-Tln-Tab-Ptr: ....................................................... 40
5.1.7 Special Features of the DEFAULT SAP............................................................ 41
5.2 SM-SAP List ...................................................................................................... 43
5.3 Indication Queue................................................................................................ 44
5.3.1 Description......................................................................................................... 44
5.3.2 Structure of the Indication Block........................................................................ 46
5.4 Reply-on-Indication Blocks ................................................................................ 47
5.4.1 Description......................................................................................................... 47
5.4.2 Structure of the Reply-on-Indication Blocks ...................................................... 48
6DP Interface................................................................................................................... 51
6.1 Description......................................................................................................... 52
6.2 Productive Services........................................................................................... 55
6.2.1 Data Exchange .................................................................................................. 55
6.2.2 Read-Input-Data ................................................................................................ 57
6.2.3 Read-Output-Data ............................................................................................. 58
6.2.4 Global Control (Sync, Freeze, Clear Data)........................................................ 59
6.2.5 Leave-Master..................................................................................................... 61
6.2.6 Baudrate Search................................................................................................ 62
7ASIC Interface ............................................................................................................... 63
7.1 Latch Parameters .............................................................................................. 65
7.1.1 Slot-Time Register............................................................................................. 65

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7.1.2 Baudrate Register.............................................................................................. 65
7.1.3 BEGIN-PTR Register......................................................................................... 67
7.1.4 UMBR-PTR Register ......................................................................................... 67
7.1.5 BASE-PTR Register .......................................................................................... 67
7.1.6 TRDY Register................................................................................................... 68
7.1.7 PREAMBLE Register......................................................................................... 68
7.1.8 SYN-Time Register............................................................................................ 69
7.1.9 Delay-Timer Register......................................................................................... 69
7.1.10 Factor-Delay-Timer-Clock Register ................................................................... 70
7.1.11 Mode Register ................................................................................................... 70
7.1.12 Status Register .................................................................................................. 79
7.2 Fail-safe Mode ................................................................................................... 82
7.3 Time-of-Day Synchronization ............................................................................ 84
7.4 DDB Mechanism................................................................................................ 85
7.5 Activating the Extensions .................................................................................. 86
7.6 Memory Expansion to 3 Kbytes......................................................................... 87
7.6.1 Memory Wastage with 16-Byte Segments ........................................................ 88
7.6.2 Mem-Overflow Interrupt with 16-Byte Segments............................................... 88
7.7 FF Mode ............................................................................................................ 89
7.7.1 Send and Receive Buffer Structure ................................................................... 89
7.7.2 Sending.............................................................................................................. 89
7.7.3 Receiving ........................................................................................................... 89
7.8 Error Trigger Signal ........................................................................................... 91
7.9 Interrupt Controller............................................................................................. 93
7.9.1 Interrupt Assignment.......................................................................................... 94
7.9.2 Interrupt Assignment in the FF Mode ................................................................ 96
7.10 Clock Synchronization ....................................................................................... 98
7.11 SPC 4-2-Timers ............................................................................................... 100
7.11.1 Delay Timer ..................................................................................................... 100
7.11.2 Idle Timer......................................................................................................... 101
7.11.3 Syni-Timer ....................................................................................................... 102
7.11.4 Slot Timer ........................................................................................................ 103
7.11.5 Timeout Timer.................................................................................................. 103
7.11.6 New Timers in the FF Mode ............................................................................ 104
8Asynchronous Interface ............................................................................................ 107
8.1 Baud Rate Generator....................................................................................... 108
8.2 Transmitter....................................................................................................... 109
8.3 Transmitter....................................................................................................... 110
8.4 Serial Bus Interface PROFIBUS Interface (Asynchronous) ............................ 111
8.4.1 Interface Signals.............................................................................................. 111
8.4.2 RS-485 Timing................................................................................................. 112
8.4.3 Suggested Wiring for RS-485.......................................................................... 113
9Synchronous Interface............................................................................................... 115
9.1 Overview.......................................................................................................... 116
9.2 Baud Rate Generator....................................................................................... 117

Contents
PROFIBUS Controller SPC 4®-2 LF
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9.3 Transmitter....................................................................................................... 118
9.4 Receiver........................................................................................................... 121
9.5 Pulse Modulation in the SPC 4-2..................................................................... 122
9.6 Pulse Demodulation......................................................................................... 123
9.7 Fast Synchronizer in the Manchester Receiver............................................... 124
10 Clock Pulses ............................................................................................................... 125
11 Processor Interface .................................................................................................... 129
11.1 Universal Processor Interface ......................................................................... 130
11.2 Bus Interface Unit (BIU)................................................................................... 133
11.3 Dual-Port RAM Controller................................................................................ 134
11.3.1 Function ........................................................................................................... 134
11.3.2 Access to the SPC 4-2 with LOCK Activated .................................................. 135
11.4 Other Pins........................................................................................................ 136
11.4.1 Test Pins.......................................................................................................... 136
11.4.2 XHOLDTOKEN ................................................................................................ 136
11.5 Interrupt Timing................................................................................................ 137
11.6 Reset Timing.................................................................................................... 138
11.7 Intel /Siemens 8051 (synchronous) etc. .......................................................... 139
11.7.1 Circuit Diagram ................................................................................................ 139
11.7.2 Timing 80C32 .................................................................................................. 140
11.8 Intel X86 (asynchronous)................................................................................. 142
11.8.1 Circuit Diagram ................................................................................................ 142
11.8.2 Timing x86 ....................................................................................................... 143
11.9 Siemens 80C165 (asynchronous) ................................................................... 145
11.9.1 Circuit Diagram ................................................................................................ 145
11.9.2 Timing 80C165 ................................................................................................ 146
11.10 Timing 68HC16 (asynchronous)...................................................................... 148
11.10.1 Timing 68HC16................................................................................................ 148
11.11 Motorola 68HC11 (synchronous)..................................................................... 150
11.11.1 Timing 68HC11................................................................................................ 150
12 Technical Specifications............................................................................................ 153
12.1 Maximum Limit Values..................................................................................... 154
12.2 Permitted Operating Values ............................................................................ 155
12.3 Power Consumption ........................................................................................ 156
12.4 DC Specification of the Pad Cells.................................................................... 157
12.5 Ratings of the Output Drivers .......................................................................... 158
13 Package ....................................................................................................................... 159
13.1 Instructions on Handling .................................................................................. 161
13.2 Labeling ........................................................................................................... 163
13.3 Packaging of the ASIC..................................................................................... 164

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14 References .................................................................................................................. 167
15 Addresses ................................................................................................................... 169
15.1 PNO ................................................................................................................. 170
15.2 Contacts in the Interface Center...................................................................... 171
16 Appendix ..................................................................................................................... 173
16.1 Server Software for the SPC 4-2 ..................................................................... 174
16.2 SIM1................................................................................................................. 176

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Introduction 1

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ASICs
For simple and fast digital exchange between programmable logic controllers,
Siemens offers users various ASICs. These ASICs either support or handle the
entire data exchange between the automation stations according to the PROFIBUS
standards and guidelines DIN 19245 Part 1, Part 2, Part 3 and PROFIBUS PA
(Part 4), EN 50170 Volume 2, IEC 61158 Ed.3, and IEC 61784-1. The SPC 4®-2
also supports the Foundation Fieldbus as described in IEC 61158. Ed3.
Functionality
The SPC 4®-2 (Siemens PROFIBUS Controller) operates at layer 1 of the OSI
model and requires an additional microprocessor to implement layers 2 and 7.
With the SPC 4®-2 , parts of layer 2 that handle the bus protocol are integrated. For
the other functions of layer 2 (interfacing, management) an additional
microprocessor is required.
In addition to the layer 2 functionality, the following productive services are also
integrated on the ASIC: Data_Exchange, Read_Input, Read_Output and the
Global_Control command of DIN E 19245 Part 3/EN50170/IEC61158 as well as
the PROFIBUS-PA functionality (DIN E 19245 Part 4/EN 50170/IEC 61158, IEC
61784-1).
SPC 4-2 supports the following communication profiles:
●PROFIBUS FMS
●PROFIBUS PA
●PROFIBUS DP
●Foundation Fieldbus®1(FF).
The communication profiles and the possible combinations with the physical media
(copper, glass-fiber) are described in the IEC 61784-1 standard (apart from
PROFIBUS-FMS, see EN 50170 Vol. 2).
The SPC 4-2 supports passive nodes on the bus system (slaves) and filters out all
external frames and bad data frames.
To extend the SPC 4-2 for PROFIBUS PA and FF, the SIM 1 communication
interface chip is available. The SIM 1 ASIC implements the function of a Medium
Attachment Unit (MAU).
1Foundation Fieldbus is a registered trademark of Fieldbus Foundation.

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C79000-G8976-C157-3 11
Functional Overview 2

PROFIBUS Controller SPC 4®-2 LF
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Apart from the bus drivers, the SPC 4-2 contains the entire PROFIBUS peripherals.
The additional processor does not need to provide a hardware timer to process the
bus protocol.
Baud rates from 9.6 kbit/s to 12 Mbit/s are supported. The SIM 1 ASIC is an ideal
extension for PROFIBUS PA.
The SPC 4-2 has a universal microcontroller interface with an 8-bit data bus
interface and a 10-bit address bus. Depending on the configuration, the
data/address but can be operated separately or multiplexed so that processors with
the standard x86 timing, the Motorola timing, the SAB C165 timing, or an 80C32
timing can be connected.
Since the interface supports both INTEL and MOTOROLA architectures, the Intel
or Motorola data format is selected with two configuration pins along with the
synchronous (rigid timing) or asynchronous (with Ready support) processor bus
timing.
The handshake between the processor and the SPC 4-2 is executed by the FLC
firmware (Field Bus Link Control; synonym for all communication stacks) via the
dual-port RAM (extended to 3 Kbytes) integrated on the SPC 4-2.
From the point of view of the user, the SPC 4-2 occupies an address space of
1 Kbyte.
The plausibility check when request frames are received is handled by the SPC 4-
2.
Pulse Modulation
The SPC 4-2 has circuits for a direct connection SIM 1-optocoupler-SPC 4-2
(PROFIBUS PA attachment) using the current-saving interface of the SIM. A
separate adapter circuit is no longer necessary.
The frames received from the SIM 1 are converted to a series of short pulses and
then passed on to the SPC 4-2.
Fast Synchronizer in the Manchester Receiver
Fast synchronization means finding the bit mid point in the preamble of a
Manchester frame (PROFIBUS PA). This allows the SPC 4-2 to tolerate larger
systematic distortion (all rising or falling edges are delayed by the same amount).

Functional Overview
PROFIBUS Controller SPC 4®-2 LF
C79000-G8976-C157-3 13
Compatibility with SPC 4/4-1
The SPC 4®-2 is compatible with the ASIC SPC 4®and SPC 4®1. This compatibility
includes the mechanical and electrical properties as well as the functions used via
a software interface.
Additional properties of the SPC 4-2
●Optional use of PROFIBUS and Foundation Fieldbus by changing the firmware
●PROFISafe prepared (slave-slave communication)
●PROFIDrive support (clock pulse output)
●Time-of-day synchronization for time stamping alarms and events
●Memory expanded from 2K to 3K
●Diagnostic output
●Selectable unsharpness window of the pulse modulation
The expansions of the SPC 4-2 are activated using previously unused parameter
registers. The SPC 4/SPC 4-1 does not evaluate address bits 7 to 5 when the
parameter registers are accessed so that all registers can be accessed under
several addresses (write and read). All the SPC 4/SPC 4-1 and 4 new SPC 4-2
registers are within this accessible address space. By activating the "Enable SPC
4-2" bit, the SPC 4-2 evaluates all address bits.
The SPC 4-2 contains 4 new 16-bit timers. These can be used in the FF mode
since they use interrupt bits that are only free in the FF mode. All the timers are
clocked at the baud rate and can be operated as "One-Shot" or as "Cyclic" timers.
Additional properties of the SPC 4-2 LF
●Meets the requirements of the EU directive:
2002L0095 — EN — 01.07.2006 — 002.001 — 1
●Can be used with lead-free and lead solder techniques
●New package type 44-pin LQFP
●New delivery packaging

PROFIBUS Controller SPC 4®-2 LF
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Pin Assignment 3

PROFIBUS Controller SPC 4®-2 LF
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The SPC 4-2 has a 44-pin plastic quad flat package housing (see Chapter 11). The
pin assignment is described in Table 3-1 Pin Assignment
Note:
All signals that start with X.. are LOW-active
Pin Signal name In/
Out
Description Source / Dest Processor
Variant
1 XCS I Chip select CPU C32 mode: connect
to VDD
otherwise: CS
signal
2 XWR / E I Write signal
E-clock with Motorola 1 clock
pulse=1 memory cycle (in
asynchronous mode, connect to
VDD)
CPU
3 DIVIDER I Divider for ISCLK-OUT (pin 7)
0=:4, 1=:2
System
4 XRD
R/W
I Read signal
Read/Write with Motorola
(low=write)
CPU
5 CLK I Clock input System
6 VSS
7 ISCLK-Out L Input clock, divided by 2 or 4 System, CPU
8 Type I Data format of processor interface
(see Mode Table)
9 XINT L Interrupt output CPU, Interrupt-Contr.
10 XINTCI L Port pin in the compatibility mode,
in the extended mode interrupt
output clock synchronization
CPU, Interrupt-Contr. Port pin bit 1 of
mode register 2
11 DB0 I/O Data bus CPU, memory C32 mode:
data/address bus
multiplexed
12 DB1 I/O Data bus CPU, memory Otherwise:
data/address bus
separate
13 XHOLDTOKEN L Port pin in compatibility mode, in
extended mode trigger output for
measurements
Port pin bit 0 of
mode register 2
14 XREADY
XDTACK
L Ready for external CPU
Data transfer acknowledge with
Motorola
System, CPU
15 DB2 I/O Data bus CPU, memory C32 mode:
data/address bus
multiplexed
16 DB3 I/O Data bus CPU, memory Otherwise:
data/address bus
separate
17 VSS
18 VDD
19 DB4 I/O Data bus CPU, memory C32 mode: data

Pin Assignment
PROFIBUS Controller SPC 4®-2 LF
C79000-G8976-C157-3 17
Pin Signal name In/
Out
Description Source / Dest Processor
Variant
20 DB5 I/O Data bus CPU, memory /address bus
multiplexed
21 DB6 I/O Data bus CPU, memory Otherwise:
data/address bus
22 DB7 I/O Data bus CPU, memory separate
23 MODE I Timing format of the processor
interface (see Mode Table)
System
24 ALE
AS
I Address latch enable
Address strobe with Motorola (in
synchronous operation connect
to VDD)
CPU C32 mode: ALE
Motorola mode
AS
25 AB9 I Address bus CPU C32 mode: :
<log> 0
26 TXD-TXS L Serial transmit channel RS-485 transmitter
27 RTS-ADD L Request To Send RS-485 transmitter
28 VSS
29 AB8 I Address bus System, CPU C32 mode: <log>
0
30 RXD-RXS I Serial receive channel RS-485 receiver
31 AB7 I Address bus System, CPU C32 mode: <log>
0
32 AB6 I Address bus System, CPU C32 mode: <log>
0 for CS
33 XCTS I Clear to Send <log> 0 = clear to
send
MODEM/FSK
34 XTEST0 I Pin must be connected to VDD.
35 XTEST1 I Pin must be connected to VDD.
36 RESET I Reset input: connect to port pin
of CPU
37 AB4 I Address bus System, CPU C32 mode: <log>
0 for CS
38 VSS
39 VDD
40 AB3 I Address bus System, CPU C32 mode: <log>
0 for CS
41 AB2 I Address bus System, CPU C32 mode: <log>
0 for CS
42 AB5 I Address bus System, CPU C32 mode: <log>
0 for CS
43 AB1 I Address bus System, CPU C32 mode:
address window
44 AB0 I Address bus System, CPU C32 mode:
address window
Table 3-1 Pin Assignment

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Memory Assignment 4

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4.1 Addressing the SPC 4-2
From the user perspective, the 3-Kbyte internal dual-port RAM and the internal
latches occupy a 1-Kbyte address space. Parts of the internal RAM are located
directly in the address range of the microprocessor, the other parts can be
addressed using a window mechanism, see Figure 4-1
Micro-
processor SPC42
0H
0xBFFH
3 kB RAM
0H
1FFH
200H
2FFH
300H
3FFH
512 bytes
general
parameters,
SAP list
256 bytes
memory window
256 bytes
controller
parameters
Latches
Figure 4-1 Addressing the Internal 3-Kbyte RAM