Siemens SIMATIC S5 User manual

SIMATIC S5
Standard Function Counter
for the IP 265
Manual
EWA 4NEB 812 6131-02a

STEP ® and SIMATIC ® are registered trademarks of Siemens AG.
Copyright © Siemens AG 1992
Subject to change without prior notice.
”The reproduction, transmission or use of this document or
its contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including
rights created by patent grant or registration of a utility model
or design, are reserved.”
EWA 4NEB 811 6131-02

Standard Function Counter Preface
Preface
Counting of high-speed processes is an essential task in automation. For this reason, SIEMENS
offers a submodule with the standard function counter, MLFB 6ES5 840-4SH01.
The submodule with the standard function counter can be used together with an IP 265 in the S5-
90U, S5-95U and S5-100U programmable controllers and additionally in the ET 200 system (from
version Z02 of the IM 318-B).
The principle of operation of the IP 265 is determined by the use of the submodule with the standard
function counter.
All interfaces to the standard function are the interfaces of the IP 265 to the SIMATIC environment
or to the process I/O.
See the relevant section of your system manual for details of the construction of a system or the
installation of the module.
Function overview of the standard function
Three different counter functions have been stored in the submodule. The functions can be divided
into two areas:
• 2 counters with 16-bit data width
These two counters can be used independently of one another as up counter (normal counter
function) or as down counter (periodic counter function).
• 1 counter with 32-bit data width
Both counters can be combined into one 32-bit wide counter (cascade function) for counter
functions requiring a considerably larger data area. This counter operates as a down counter
(like the periodic counter function).
From the STEP 5 program, you can set the relevant setpoints and control signals and read the
relevant actual values and diagnostic signals over the I/O bus.
The following description refers exclusively to the principle of operation of the standard function
counter in the IP 265.
Please see the descriptions in the IP 265 manual or in your system manual (S5-95U, S5-100U) for
details of installation guidelines and connection methods.
Convention
Information of special importance is contained in framed boxes like the following:
Warning / Note
See the Safety-Related Guidelines in your manual (IP 265) or your system manual (S5-95U) for the
definition of the terms "Warning" and "Note".
EWA 4NEB 812 6131-02 iii

Standard Function Counter Contents
Contents
Page
1 Construction of the IP 265 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1 Hardware design of the module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.1 Terminal for Load Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.2 Digital 24 V Inputs/Digital 24 V Outputs . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.1.3 Symmetrical 5 V Differential Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 3
1.1.4 Submodule Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
1.1.5 LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
2 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.1 24 V DC Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.2 Establishing the Connection to the S5-100U Bus . . . . . . . . . . . . . . . . . 2 - 1
2.3 Establishing the Connection to the I/O . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
2.4 Further Notes on Configuring and Installing the Module . . . . . . . . . . . . . 2 - 4
3 Input and Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
3.1 Counter Pulses at the CU1 and CU2 Input . . . . . . . . . . . . . . . . . . . . . 3 - 1
3.2 Signals that have an Influence on Counting . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.2.1 Resetting an Output (RSQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.2.2 Resetting a Counter Channel (RSC) . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.2.3 GATE Signal (GATE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.3 Counter Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.4 Location of the Signals in the Process I/O Images . . . . . . . . . . . . . . . . 3 - 3
3.5 ORing and Evaluating Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
EWA 4NEB 812 6131-02 v

Contents Standard Function Counter
Page
4 The Counter Functions 4 - 1
4.1 Selecting the Counter Function Mode . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
4.2 Transferring the Set Function Mode Using the IP 265 . . . . . . . . . . . . . . 4 - 3
4.2.1 Switching from Two-Channel Mode to Cascade Mode . . . . . . . . . . . . . 4 - 3
4.2.2 Switching from the Cascade Function to Two-Channel Mode . . . . . . . . . 4 - 3
4.3 Counter Statuses and Signal Flow in the Three Function Modes . . . . . . 4 - 4
4.3.1 The Normal Counter Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 4
4.3.2 The Periodic Counter Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5
4.3.3 The Cascade Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 6
4.4 Value Range for Setpoints and Counter Values . . . . . . . . . . . . . . . . . . 4 - 7
4.5 Loading the setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 7
4.5.1 Specifying and Implementing a Setpoint . . . . . . . . . . . . . . . . . . . . . . . 4 - 8
5 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
6 Loading and Starting the Standard Function . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
A Diagnostics and Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 1
A.1 Status Word (Byte 0, Byte 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 1
A.2 LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A - 1
B Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B - 1
C Ordering Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C - 1
vi EWA 4NEB 812 6131-02

Standard Function Counter Construction of the IP 265 Module
1 Construction of the IP 265 Module
1.1 Hardware design of the module
The standard function counter is carried by the IP 265, a single-width module of the S5-100 PLC.
The IP 265 is equipped with several hardware interfaces for communication with the system
environment.
Figure 1-1 shows the position of the interfaces and the operator controls on the frontplate of the
module.
Figure 1-1. Overview of the Module
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6ES5 265-
8MA01
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Digital outputs
(24 V)
Digital inputs
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Memory submo-
dule receptacle
9-pin sub D
9-pin sub D
Submodule with standard
function counter
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Operator controls on the frontplate
15-pin sub DDifferential inputs
(5 V)
Connector for
24 V load
voltage
2-pin connector
LEDsFault and status
displays
1.1.1 Terminal for Load Voltage
The load circuit of the plant controller is supplied with 24 V DC via the load voltage connector on the
frontplate of the IP 265.
The 24 V supply allows connection of 24 V plant sensors and actuators to the digital inputs and
outputs of the module (load current circuit).
Note
The IP 265 must receive the 24 V supply for operation.
EWA 4NEB 812 6131-02a 1-1

Construction of the IP 265 Module Standard Function Counter
1.1.2 Digital 24 V Inputs/Digital 24 V Outputs
Two 9-pin sub D interfaces are located on the frontplate of the IP 265
Connect the signal lines of the sensors to the 9-pin sub D connector marked "INPUT". You can
connect up to 8 24 V digital inputs. The frequency of the input signals may be up to 10 kHz.
Connect the signal lines of the actuators to the 9-pin sub D socket marked "OUTPUT". The
response time of the 24 V digital outputs depends on the resistive load of the output circuit and the
type of output level changes (LOW -> HIGH or HIGH -> LOW; see also the Technical
Specifications). A typical response time with maximum resistive load is 70 s.
See the following diagram for the pin assignments of both interfaces.
Figure 1-2. Pin Assignments of the Input Interface and the Output Interface
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Meaning of the digital inputs
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Pin
RSQ 1 reset output Q1
CU1 counter pulses channel 1
GATE 1 GATE signal channel 1
RSC 1 reset counter 1
CU2 counter pulses channel 2
GATE 2 GATE signal channel 2
RSQ reset output Q2
RSC 2 reset counter 2
Ground (24 V)
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Pin
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Q1 output channel 1
Q1\ negated output channel 1
Q2\ negated channel 2
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6ES5 265-
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1-2 EWA 4NEB 812 6131-02a

Standard Function Counter Construction of the IP 265 Module
1.1.3 Symmetrical 5 V Differential Inputs
The differential inputs are located on the 15-pin sub D socket of the module. The differential inputs
interface conforms to the RS422A standard. You can connect 5 V sensors with differential signals to
the differential inputs. Maximum input frequency is 58 kHz. The pulse length of the input signals at
the 5 V differential inputs (signal ”0” (0 V) or ”1” (5 V) must be at least 8.6 µs.
Unwired (”open”) 5 V differential inputs are handled by the IP 265 as differential inputs with signal
state ”1” (5 V).
Figure 1-3 shows you where on the 15-pin sub D socket the signal lines of the 5 V sensors are to
be connected. Four pins are reserved on the sub D socket for the two differential inputs. The
remaining 10 pins of the 15-pin sub D socket are irrelevant to the use of the counter function (->
see the IP 265 Manual for further information on the pin assignments of the interface).
Figure 1-3. Pin Assignments for the 5 V Differential Inputs
Meaning
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6ES5 265-
8MA01
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B-N Counter pulse channel 2
Ground (5 V)
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!Warning
All pins not used for the standard function counter must remain inactive.
EWA 4NEB 812 6131-02a 1-3

Construction of the IP 265 Module Standard Function Counter
1.1.4 Submodule Receptacle
The submodule with the standard function counter is plugged into the submodule receptacle on the
IP 265.
!Warning
The memory submodule can only be plugged in or removed when the module is in the
POWER OFF state.
1.1.5 LED Displays
The frontplate of the IP 265 is equipped with several LEDs:
• 1 red STOP LED
• 1 green RUN LED
• 8 green LEDs for 8 digital 24 V inputs
• 8 green LEDs for 8 digital 24 V outputs
Either the RUN LED or the STOP LED will light up to indicate the operating state of the IP 265.
Faults in the IP 265 are indicated by the STOP LED or by a combination of the RUN and the STOP
LED. Different faults are indicated by different flashing signals. See Appendix A for a summary of all
the possible status displays of the IP 265 in conjunction with the standard function counter.
1-4 EWA 4NEB 812 6131-02a

Standard Function Counter Installation Guidelines
2 Installation Guidelines
This section describes how to establish the connections with the programmable controller and the
process I/O.
2.1 24 V DC Supply
The IP 265 is a non-floating module. The 24 V DC load current circuits share the same ground with
the control circuit of the PLC.
Figure 2-1 shows the simplified connection of the IP 265 to the PLC.
Figure 2-1. Simplified Representation for Non-Floating Connection of the IP 265 to the PLC
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L+
M
External power supply
Central ground
CPU
L+ M
L+
M
IP
Connector for
load voltage
Note
When using the IP 265, you must connect the ground of the IP 265 load voltage con-
nector with the CPU ground via an external connection at the central grounding point.
When doing so, please make sure you use a low-resistance connecting cable (cable
should be as short as possible).
2.2 Establishing the Connection to the S5-100U Bus
The IP 265 is like an I/O module of the S5-100U system and is snapped onto a bus unit. You must
note the following points when assembling and dismantling the module:
• The IP 265 may be plugged in or removed only without load voltage and when the CPU is in the
STOP state.
• The memory submodule may be plugged in or removed only when the module and the CPU are
in the POWER OFF state.
• The IP 265 can only be snapped onto a bus unit in slots 0 to 7 of the programmable controllers.
• For instructions on assembling and dismantling the module, see the IP 265 Manual or the
System Manuals for the S5-100U, S5 90/95U or ET 200.
EWA 4NEB 812 6131-02 2-1