Toshiba Programmable Controller PROSEC T3 User manual

UM-TS03∗∗∗-E018
PROGRAMMABLE CONTROLLER
PROSEC T3
PULSE INPUT MODULE
PI312
USER’S MANUAL
TOSHIBA CORPORATION

Important Information
Misuse of this equipment can result in property damage or human injury.
Because controlled system applications vary widely, you should satisfy yourself
as to the acceptability of this equipment for your intended purpose.
In no event will Toshiba Corporation be responsible or liable for either indirect
or consequential damage or injury that may result from the use of this equipment.
No patent liability is assumed by Toshiba Corporation with respect to use of
information, illustrations, circuits, equipment or examples of application in this
publication.
Toshiba Corporation reserves the right to make changes and improvements to this
publication and/or related products at any time without notice. No obligation shall be
incurred other than as noted in this publication.
This publication is copyrighted and contains proprietary material. No part of this book
may be reproduced, stored in a retrieval system, or transmitted, in any form or by any
means electrical, mechanical, photocopying, recording, or otherwise without
obtaining prior written permission from Toshiba Corporation.
Copyright © 1995 by Toshiba Corporation
Tokyo, Japan
All rights reserved
Publication number: UM-TS03∗∗∗-E018
1st edition August 1995, 2nd edition May 1999

User’s Manual 1
Safety Precautions
This module (PI312) is a pulse input module for Toshiba’s Programmable Controller PROSEC-T3
(hereafter called T3). Read this manual thoroughly before using this module. Also, keep this
manual and related manuals so that you can read them anytime while this module is in operation.
Safety Symbols
The following safety symbols are used on the product and/or in the related manuals.
Pay attention to information preceded by the following symbols for safety.
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. It may also be used to alert
against unsafe practices.
Safety Precautions
•Turn off power to the T3 and to the PI312 before removing or mounting the PI312.
Failure to do so can cause electrical shock or damage to this product.
•Read the Safety Precautions described in the T3 User’s Manual before using the T3
and the PI312.
•Follow the instructions described in this manual and in the T3 User’s Manual when
installing and wiring the T3 and the PI312.
•The PI312 has been designed for the T3. Use your PI312 only on the rack of the T3.
•Remove the PI312 from the rack before setting the jumper plugs on the PI312.
Do not touch other components on the PI312’s printed circuit board. It may cause
damage to the PI312.
•The PI312 consumes maximum 0.8 A of internal 5 Vdc power. Confirm that the total
5 Vdc consumed current per one power supply module is within the limit (7A).
If it exceeds the limit, the T3 cannot operate properly and this may cause unsafe
situation.
!
W
ARNING
!
C
AUTION
!
C
AUTION

2Pulse Input Module (PI312)
About This Manual
About This Manual
This manual explains the specifications and operations of the Pulse InputModule
(PI312) for Programmable Controller T3. Read this manual carefully before using the
PI312.
Inside This Manual
Section 1 Overview
This section introduces the PI312. The PI312 has nine (9) operation modes. This section
outlines the PI312’s operation modes. Read this section at first to get basic understanding
of the operation modes and to decide the operation mode for your intended application.
The external features of the PI312 are also provided in this section.
Section 2 Specifications
This section provides the hardware and functional specifications of the PI312. Refer to this
section to check applicability of the PI312 with your intended system.
Section 3 Wiring
This section provides the information for external wire connections. Depending on the
operation modes, wire connections are different. Read this section after you have decided
the operation mode. Wiring precautions are also provided in this section.
Section 4 Register Configuration
This section provides the information to design T3 program for the PI312. This section
explains the I/O allocation and functions of the I/O registers assigned to the PI312. Also, this
section explains the buffer memory contents which is provided in the PI312, and how to
access the buffer memory by T3 program.
Section 5 Operation Mode Setting
This section explains the method for setting the PI312 to your desired operation mode.
The PI312’s operation mode is determined by setting the jumper plugs on the PI312 and by
writing a mode data into the PI312’s buffer memory. T3 sample programs for setting the
PI312’s operation mode are provided in this section.
Section 6 Function Details
This section explains details of each operation mode. This section consists in nine (9)
clauses according to the operation modes. Each clause contains the explanation for
functions, necessary external signals, I/O register and buffer memory usage, and T3 sample
programs. Read the clause for your intended operation mode.
Section 7 Interrupt Function
The PI312 can generate interrupt signal for T3. This section provides the information to
design the T3 interrupt program. The interrupt generation timing is explained in section 6.
Appendix
The specifications of READ and WRITE instructions are described. These instructions are
used for interchanging data between T3 and PI312.

User’s Manual 3
About This Manual
Related Manuals
The following related manuals are available for T3. Besides this manual, read the following
manuals for your better understanding.
T3 User’s Manual - Hardware
This manual covers the T3’s main body and basic I/O - their specifications, handling,
maintenance and services.
T3 User’s Manual - Functions
This manual explains the functions of the T3 and how to use them. The necessary
information to create user program is covered in this manual.
T-series Instruction Set
This manual provides the detailed specifications of instructions for Toshiba’s T-series
Programmable Controllers.
T-series Computer Link Function
This manual provides the information for a computer to communicate with T3 through the
T-series Programmable Controller’s Computer Link function.
T-PDS (Ver. 1.4) Basic Operation manual
This manual explains how to install the T-series program development system (T-PDS)
into your computer and provides basic programming operations.
T-PDS (Ver. 1.4) Command Reference Manual
This manual explains the T-series program development system (T-PDS) in detail.
T-PDS (Ver. 1.6) Expanded Functions
This manual explains the expanded functions on the T-PDS version 1.6. This manual
supplements the T-PDS (Ver.1.4) Command Reference Manual.
T-series Handy Programmer (HP911) Operation Manual
This manual explains the functions and key operations of the T-series Handy Programmer
(HP911).
Other than the listed above, some T3 related manuals for special I/O modules and data
transmission modules are available. Contact Toshiba for more information.
N
OTE

4Pulse Input Module (PI312)
Contents
Contents
Safety Precautions .................................................................................. 1
About This Manual .................................................................................. 2
1. PI312 Overview .......................................................................... 7
1.1 Introduction ...................................................................................... 8
1.2 Operation mode overview ................................................................ 9
1.2.1 Counter operation mode ................................................................ 9
1.2.2 Pulse count mode .......................................................................... 17
1.3 External features .............................................................................. 18
2. Specifications ............................................................................ 21
2.1 General specifications ...................................................................... 22
2.2 Functional specifications ................................................................ 22
2.3 Input/output specifications ............................................................. 23
2.4 Input/output internal circuit ............................................................. 24
3. Wiring ............................................................................................ 27
3.1 Terminal arrangement ....................................................................... 28
3.2 Signal connections ........................................................................... 29
3.3 Wiring precautions ........................................................................... 32
4. Register Configuration .............................................................. 33
4.1 I/O allocation and I/O registers ........................................................ 34
4.2 PI312 buffer memory ........................................................................ 36
4.2.1 Memory map ............................................................................... 36
4.2.2 Buffer memory access ................................................................ 37
4.2.3 Count value registers .................................................................. 39
4.2.4 Upper and lower comparison value registers ............................... 40
4.2.5 Hold value registers ..................................................................... 41
4.2.6 Interrupt flags ............................................................................. 42
4.2.7 Operation mode registers ............................................................... 43
5. Operation Mode Setting .............................................................. 45
5.1 Mode setting overview ..................................................................... 46
5.2 Jumper plug setting ......................................................................... 47
5.3 Operation mode register setting ..................................................... 48

User’s Manual 5
Contents
6. Function Details ........................................................................... 51
6.1 Quadrature bi-pulse counter mode .................................................... 52
6.2 Up/down pulse counter mode .......................................................... 56
6.3 Auto-reset universal counter mode .................................................. 60
6.4 Universal counter mode .................................................................. 64
6.5 Speed counter mode ....................................................................... 68
6.6 Programmable interval timer mode ................................................ 72
6.7 Gate-ON timer mode ........................................................................ 76
6.8 Slave counter mode ........................................................................ 80
6.9 Slave timer mode ............................................................................ 85
7. Interrupt Function ........................................................................ 91
7.1 Interrupt function ............................................................................. 92
7.2 Interrupt control flags ....................................................................... 92
7.3 T3 sample program ......................................................................... 93
7.4 Precautions on interrupt function .................................................... 94
Appendix .................................................................................................... 95
A.1 Specification of the READ instruction ............................................... 96
A.2 Specification of the WRITE instruction ............................................ 98
A.3 List of operation mode setting data .................................................. 100

6Pulse Input Module (PI312)

User’s Manual 7
Section 1
PI312 Overview
1.1 Introduction
1.2 Operation mode overview
1.3 External features

8Pulse Input Module (PI312)
1. PI312 Overview
1.1 Introduction
The pulse input module PI312 (hereafter called PI312) is a high-speed pulsecounter
module for Toshiba’s Programmable Controller PROSEC-T3 (hereafter called T3).
The PI312 has 2 channels of pulse inputs, channel 1 (CH1) and channel 2 (CH2), and
can count up to 50 kHz (pulses per second) pulses individually for each channel.
The pulse input voltage can be selected either 5 Vdc or 12 Vdc by selecting the
connection terminals.
The PI312 has total 9 operation modes as listed below.
(1) Quadrature bi-pulse counter mode
(2) Up/down pulse counter mode
(3) Auto-reset universal counter mode
(4) Universal counter mode
(5) Speed counter mode
(6) Programmable interval timer mode
(7) Gate-ON timer mode
(8) Slave counter mode
(9) Slave timer mode
In the above (1) through (5) modes, the PI312 counts external pulses. In the (6) and (7)
modes, the PI312 counts its internal clock pulses, resulting it functions as timer.
These (1) through (7) modes can be set individually for channel 1 and channel 2.
In the (8) and (9) modes, PI312’s two channels work relatively.
The operation mode of the PI312 can be set by user. Refer to section 5.
The function of each operation mode is outlined in section 1.2, and explained in detail in
section 6.
The PI312 can be applied for wide range of applications by selecting the operation
mode.
(1) Correct setting of the operation mode is important to use the PI312. If it has not set
correctly, the PI312 will not work as expected.
(2) The maximum number of PI312s that can be controlled by one T3 is not limited by
software. However, the PI312 consumes maximum 0.8 A of internal 5 Vdc power.
Confirm that the total 5 Vdc consumed current per one powersupply module is
within the limit (7 A). Refer to the T3 User’s Manual −Hardware.
N
OTE

User’s Manual 9
1. PI312 Overview
1.2 Operation mode overview
This section outlines the PI312’s operation modes. Read this section to get basic
understanding of the operation modes.
1.2.1 Counter operation mode
(1) Quadrature bi-pulse counter mode
PI312 counts the pulses whose phases are shifted 90°each other. When phase A
pulse precedes against phase B pulse, the PI312 counts up (increase). On the other
hand, when phase B pulse precedes, the PI312 counts down (decrease).
When the count value is increased by 1 in the upper limit value (16777215), it is reset to
0 (zero). When the count value is decreased by 1 in the lower limit value (0), it is reset
to the upper limit value (16777215).
2 points of comparison values can be set. These are called set-point-1 and set-point-2.
When the count value is greater than the set-point-1, the PI312’s hardware comparison
output (∗S1) comes ON. When the count value is smaller than the set-point-2, the
PI312’s hardware comparison output (∗S2) comes ON.
Note) The asterisk (∗) in the above paragraph represents 1 or 2. 1S1 and 1S2 are the
outputs for channel 1, and 2S1 and 2S2 are the outputs for channel 2.
The count value is stored in the PI312’s buffer memory. This value can be read or
written (preset) by T3 with the READ instruction (FUN237) or the WRITE instruction
(FUN238), as well as the set-point-1 and set-point-2.
The interrupt function can also be used. When the count value reaches the set-point-1
in counting up or it reaches the set-point-2 in counting down, the PI312 generates
interrupt signal for the T3. Then corresponding I/O interrupt program in the T3 will be
started immediately.
Pulse form (time chart)
90°
Phase A Counting up (increase)
Phase B
Phase A Counting down (decrease)
Phase B

10 Pulse Input Module (PI312)
1. PI312 Overview
Counter operation
16777215
Count value
0
Interrupt
∗S1
∗S2
(2) Up/down pulse counter mode
PI312 counts up (increase) by the pulses into phase A, and counts down (decrease) by
the pulses into phase B.
Phase A
Phase B
Counting up Counting down
(increase) (decrease)
All other functions are the same as that of (1) Quadrature bi-pulse counter mode.
S
et-point-1
S
et-point-2

User’s Manual 11
1. PI312 Overview
(3) Auto-reset universal counter mode
PI312 counts up by the single phase pulses into phase A.
When the count value reaches the set-point-1, the count value is reset to 0 (zero). And
at the same time, the PI312 generates interrupt signal for the T3.
The set-point-1 can be set in the range of 1 to 16777215.
Phase A
Count value
0
Interrupt
(4) Universal counter mode
PI312 counts up by the single phase pulses into phase A.
Different from the (3) Auto-reset universal counter mode, the counting continues until
the upper limit value (16777215). When the count value exceeds the upper limit value,
it is reset to 0 (zero).
PI312’s comparison output for the set-point-1 (∗S1) can be used.
16777215
Count value
0
Interrupt
∗S1
S
et-point-1
S
et-point-1

12 Pulse Input Module (PI312)
1. PI312 Overview
(5) Speed counter mode
PI312 counts the single phase pulses into phase A during the specified sampling time.
Then the PI312 transfers the count value in a sampling time into the holdregister which
is allocated on the PI312’s buffer memory.
By using this mode, the frequency of the pulses can be measured.
The sampling time can be selected from 0.01 second or 0.1 second.
When the count value reaches the set-point-1, the PI312 generates interrupt signal for
the T3. PI312’s comparison output for the set-point-1 (∗S1) can be used.
∆T∆T∆T∆T∆T
Count value
0
Hold value
0
Interrupt
∗S1
∆T: sampling time = 0.01s or 0.1s
S
et-point-1
d
c
a
e
b
d
c
a
b
e

User’s Manual 13
1. PI312 Overview
(6) Programmable interval timer mode
Instead of external pulses, PI312 counts its internal clock pulses. The frequency of the
internal clock can be selected from 1, 10 or 100 kHz.
All other functions are the same as that of (3) Auto-reset universal counter mode.
By using this mode, the PI312 can be used as a cyclic interrupt generator for the T3.
Count value
0
Interrupt
S
et-point-1

14 Pulse Input Module (PI312)
1. PI312 Overview
(7) Gate-ON timer mode
PI312 functions to measure the ON duration of the external pulses into phase G.
The time is measured by PI312’s internal clock. The frequency of the internal clock can
be selected from 1, 10 or 100 kHz.
When the phase G signal is changed form OFF to ON, the PI312 resets the counter
value. Then when the signal is changed from ON to OFF, the PI312 transfers the count
value into the hold register which is allocated on the PI312’s buffer memory.
When the count value reaches the set-point-1, the PI312 generates interrupt signal for
the T3. PI312’s comparison output for the set-point-1 (∗S1) can be used.
Phase G
Count value
0
Hold value
0
Interrupt
∗S1
S
et-point-1
c
a
b
c
a
b
(
16777215)

User’s Manual 15
1. PI312 Overview
(8) Slave counter mode
In this mode, the channel 2 works relatively with the channel 1 operation.
The channel 1 is set as (3) Auto-reset universal counter mode.
The channel 2 counts the single phase pulses into phase A in the interval of the
channel 1 interrupt generation. The channel 2 count value in the interval is transferred
into the channel 2 hold register.
When the channel 2 count value reaches the channel 2’s set-point-1, the PI312
generates interrupt signal for the T3.
This mode is usable when two pulses are used relatively.
Channel 1
count value
0
Channel 1
interrupt
Channel 2
count value
0
Channel 2
hold value
0
Channel 2
interrupt
2S1
S
et-point-1
S
et-point-1
d
c
d
a
b
c
a
b

16 Pulse Input Module (PI312)
1. PI312 Overview
(9) Slave timer mode
In this mode, the channel 2 works relatively with the channel 1 operation.
The channel 1 is set as (3) Auto-reset universal counter mode.
Different from the (8) Slave counter mode, the channel 2 counts the internal clock
pulses in the interval of the channel 1 interrupt generation. The frequency of the internal
clock can be selected from 1, 10 or 100 kHz.
All other functions are the same as that of (8) Slave counter mode.
This mode is usable to measure the frequency of external pulses.
Channel 1
count value
0
Channel 1
interrupt
Channel 2
count value
0
Channel 2
hold value
0
Channel 2
interrupt
2S1
S
et-point-1
S
et-point-1
d
c
d
a
b
c
a
b

User’s Manual 17
1. PI312 Overview
1.2.2 Pulse count mode
The PI312 has 2 modes for pulse counting. They are the normal count mode and the
precision count mode.
In the normal count mode, the PI312 counts at either rising or falling edge of the pulse.
On the other hand, in the precision count mode, the PI312 counts at both rising and
falling edges. See the timing diagram below.
The pulse count mode can be selected individually for channel 1 and channel 2.
Quadrature bi-pulse counter mode:
<Normal count mode>
Phase A
Phase B
Count up Count down
<Precision count mode>
Phase A
Phase B
Count up Count down
Other than the quadrature bi-pulse counter mode:
<Normal count mode>
Phase A/B
or internal clock
Count
<Precision count mode>
Phase A/B
or internal clock
Count

18 Pulse Input Module (PI312)
1. PI312 Overview
1.3 External features
PI312
G
S
2
CH
2
CH
1
CH
2
CH
1
S
1
E
XT
B
A
G
S
2
P
ULSE IN
S
1
E
XT
B
A
SHIELD
+EXT -EXT
A12
SHIELD
+EXT
AP
-EXT
A12
2S2
PI312
24Vdc
1S2
M5
MP
GP
B5
BP
AP
M5
BP
MP
GP
2S1
1S1
SP
M12
G5I
G12
B12
A5I
SP
M12
G5I
G12
B12
A5I
B5
16
14
12
10
8
6
4
2
38 37
36 35
34 33
32 31
30 29
28 27
26 25
24 23
22 21
20 19
18 17
15
13
11
9
7
5
3
1
-
+
Status LEDs
Channel 1 pulse input terminals
Channel 2 pulse input terminals
Hardware comparison output
terminals