Explanation of Symbols ............................................... 0 - 5
For Your Safety............................................................ 0 - 6
High Voltage Safety Instructions.............................. 0 - 6
Special Handling and Unpacking Instructions.......... 0 - 6
General Instructions on Usage................................. 0 - 7
Two Years Warranty .................................................... 0 - 8
Table of Contents......................................................... 0 - 9
ID 19958, Rev. 0300Page 0 - 3® PEP Modular Computers GmbH
PrefacePB-SIO4A
Revision History
Revision History
Manual/Product Title:PB-SIO4A
Manual ID Number:19958
Rev.
Index
APreliminaryJul 1992
1Correction to Table 2.4.1Dec 1992
1.0.1Change to pinouts in Table 2.4.1 and additional
0200Title Page updatedSep 1997
0300Complete revision of manualSep 1999
This document contains information proprietary of PEP Modular Computers. It may not be
copied or transmitted by any means, disclosed to others or stored in any retrieval system or
media, without the prior written consent of PEP Modular Computers GmbH or one of its authorized agents.
The information contained in this document is, to the best of our knowledge, entirely correct.
However, PEP Modular Computers cannot accept liability for any inaccuracies, or the consequences thereof, nor for any liability arising from the use or application of any circuit, product,
or example shown in this document.
Brief Description of ChangesBoard Index
note in Jumper section
Date of
Issue
Jan 1995
PEP Modular Computers reserve the right to change, modify, or improve this document or the
product described herein, as seen fit by PEP Modular Computers without further notice.
Trademarks
PEP Modular Computers, the PEP logo and “CXM” are trade marks owned by PEP Modular
Computers GmbH, Kaufbeuren (Germany). In addition, this document may include names,
company logos and trademarks, which are registered trademarks and, therefore, proprietary
of their respective owners.
ID 19958, Rev. 0300Page 0 - 4® PEP Modular Computers GmbH
Explanation of Symbols
!
$
CE Conformity
This symbol indicates that the item described in this manual
is in compliance with all applied CE standards. See also the
section “Applied standards” of this manual.
Caution!
This symbol and title warn you of hazards due to electrical
shocks (> 60 V) when touching products or parts of them.
The non-observance of the measures indicated and/or prescribed by the law may cause harm to your product and/or
life/health.
See also the section “High Voltage Safety Instructions”.
PrefacePB-SIO4A
ESD-Sensitive Device!
This symbol and title inform you that electronic boards and
their components are sensitive to static electricity. Therefore, care must be taken during all handling operations and
inspections of this product, in order to ensure product integrity at all times.
Please read also the section “Special Handling and Unpacking Instructions” of this manual.
Attention!
This symbol and title emphasize aspects which, if not read
through carefully by the reader, might cause hazards to
health and/or damages to material.
Note:
This symbol and title emphasize aspects the reader should
read through carefully for his or her own advantage.
PEP Advantage
This symbol and title emphasize advantages or positive
aspects of a product and/or procedure.
Troubleshooting
This symbol and title characterize a message containing
useful information on troubleshooting and problem solving.
ID 19958, Rev. 0300Page 0 - 5® PEP Modular Computers GmbH
PB-SIO4APreface
For your safety
Your new PEP product was developed and tested carefully to provide all features necessary
to ensure the renown electrical safety requirements. It was also designed for a long fault-free
life. However, the life expectancy of your product can be drastically reduced by improper treatment during unpacking and installation. Therefore, in the interests of your own safety and of
the correct operation of your new PEP product, you are requested to conform with the following guidelines.
High Voltage Safety Instructions
Warning!
!
All operations on this device must be carried out by sufficiently
skilled personnel only.
Caution!
However, serious electrical shock hazards exist during all installation, repair and maintenance operations with this product. Therefore, always unplug the power cable to avoid exposure to
hazardous voltage.
Before installing your new PEP product into a system always
ensure that your mains power is switched off. This applies also to
the installation of piggybacks.
Special Handling and Unpacking Instructions
ESD Sensitive Device!
Electronic boards and their components are sensitive to static
electricity. Therefore, care must be taken during all handling operations and inspections of this product, in order to ensure product
integrity at all times.
$ Do not handle this product out of its protective enclosure while it is not used for opera-
tional purposes, unless it is otherwise protected.
$ Whenever possible, unpack or pack this product only at EOS/ESD safe work stations.
Where safe work stations are not guaranteed, it is important for the user to be electrically discharged before touching the product with his/her hands or tools. This is most
easily done by touching a metal part of your system housing.
$ It is particularly important to observe standard anti-static precautions when changing
piggybacks, ROM devices, jumper settings etc. If the product contains batteries for RTC
or memory back-up, ensure that the board is not placed on conductive surfaces, including anti-static plastics or sponges. They can cause short circuits and damage the batteries or tracks on the board.
ID 19958, Rev. 0300Page 0 - 6® PEP Modular Computers GmbH
PrefacePB-SIO4A
General Instructions on Usage
$ In order to maintain PEP’s product warranty, this product must not be altered or modi-
fied in any way. Changes or modifications to the device, which are not explicitly
approved by PEP Modular Computers and described in this manual or received from
PEP Technical Support as a special handling instruction, will void your warranty.
$ This device should only be installed in or connected to systems that fulfill all necessary
technical and specific environmental requirements. This applies also to the operational
temperature range of the specific board version, which must not be exceeded. If batteries are present, their temperature restrictions must be taken into account.
$ In performing all necessary installation and application operations, please, follow only
the instructions supplied by the present manual.
$ Keep all the original packaging material for future storage or warranty shipments. If it is
necessary to store or ship the board please re-pack it as nearly as possible in the manner in which it was delivered.
$ Special care is necessary when handling or unpacking the product. Please, consult the
special handling and unpacking instruction on the previous page of this manual.
ID 19958, Rev. 0300Page 0 - 7® PEP Modular Computers GmbH
PB-SIO4APreface
Two Years Warranty
PEP Modular Computers grants the original purchaser of PEP products a TWOYEARSLIMITED
HARDWAREWARRANTY as described in the following. However, no other warranties that may
be granted or implied by anyone on behalf of PEP are valid unless the consumer has the
express written consent of PEP Modular Computers.
PEP Modular Computers warrants their own products, excluding software, to be free from
manufacturing and material defects for a period of 24 consecutive months from the date of
purchase. This warranty is not transferable nor extendible to cover any other users or longterm storage of the product. It does not cover products which have been modified, altered or
repaired by any other party than PEP Modular Computers or their authorized agents. Furthermore, any product which has been, or is suspected of being damaged as a result of negligence, improper use, incorrect handling, servicing or maintenance, or which has been
damaged as a result of excessive current/voltage or temperature, or which has had its serial
number(s), any other markings or parts thereof altered, defaced or removed will also be
excluded from this warranty.
If the customer’s eligibility for warranty has not been voided, in the event of any claim, he may
return the product at the earliest possible convenience to the original place of purchase,
together with a copy of the original document of purchase, a full description of the application
the product is used on and a description of the defect. Pack the product in such a way as to
ensure safe transportation (see our safety instructions).
PEP provides for repair or replacement of any part, assembly or sub-assembly at their own
discretion, or to refund the original cost of purchase, if appropriate. In the event of repair,
refunding or replacement of any part, the ownership of the removed or replaced parts reverts
to PEP Modular Computers, and the remaining part of the original guarantee, or any new
guarantee to cover the repaired or replaced items, will be transferred to cover the new or
repaired items. Any extensions to the original guarantee are considered gestures of goodwill,
and will be defined in the “Repair Report” issued by PEP with the repaired or replaced item.
PEP Modular Computers will not accept liability for any further claims resulting directly or indirectly from any warranty claim, other than the above specified repair, replacement or refunding. In particular, all claims for damage to any system or process in which the product was
employed, or any loss incurred as a result of the product not functioning at any given time, are
excluded. The extent of PEP Modular Computers liability to the customer shall not exceed the
original purchase price of the item for which the claim exists.
PEP Modular Computers issues no warranty or representation, either explicit or implicit, with
respect to its products’ reliability, fitness, quality, marketability or ability to fulfil any particular
application or purpose. As a result, the products are sold “as is,” and the responsibility to
ensure their suitability for any given task remains that of the purchaser. In no event will PEP
be liable for direct, indirect or consequential damages resulting from the use of our hardware
or software products, or documentation, even if PEP were advised of the possibility of such
claims prior to the purchase of the product or during any period since the date of its purchase.
Please remember that no PEP Modular Computers employee, dealer or agent is authorized to
make any modification or addition to the above specified terms, either verbally or in any other
form, written or electronically transmitted, without the company’s consent.
ID 19958, Rev. 0300Page 0 - 8® PEP Modular Computers GmbH
The PB-SIO4A is a quad (four) channel asynchronous RS422/RS485 serial piggyback
with support for full duplex RS422/RS485 transmit, receive, and RTS/CTS handshake
signals.
There are four different versions of the PB-SIO4A available:
non-optoisolated:
•RS422
•RS485
optoisolated:
•RS422
•RS485.
Any version combination can be installed on a single carrier board. Interfacing to the
PB-SIO4A depends on the type of connector provided by the carrier board or optional
adapters.
1.1.2Features
General:
•Interrupt request line employed, interrupt vector generated by the DUART’s.
•Board ID byte for remote (software) configuration identity checking.
•Compact size, four serial ports within standard industrial I/O piggyback dimensions.
•Easy to maintain. Quick and simple replacement if required.
Hardware:
•Full electrical and mechanical compatibility with the extensive range of carrier
boards.
•All required VMEbus lines are available on the piggyback.
•Optional optoisolated driver/receiver supporting TxD and RxD.
•Optional interface adapters with four 15-pin D-sub connectors. (See Adapter ADSIO4 chapter this manual)
•Extended temperature version available for harsh industrial environments.
1.2 Board Overview
The PB-SIO4A has two connectors for interfacing to the carrier board. Connector ST101
interfaces to the CPU side of the carrier board whereas connector ST102 provides interfacing to the external interface side of the carrier board.
ID 19958, Rev. 0300Page 1 - 3® PEP Modular Computers GmbH
PB-SIO4AIntroduction
This piggyback is fitted with DUART devices (two driver/receiver devices each handling
two of the four serial channels), as well as a GAL device containing the specific interrupt
handling logic and other features such as the I.D. number.
The optoisolated versions have eight optocouplers which are replaced with wire bridges
on the non-optoisolated versions.
For operational configuration of this piggyback there are solder jumpers located both on
the front and rear side of the board.
Figure 1-1: PB-SIO4A Board Front View (Optoisolated Version)
ID 19958, Rev. 0300Page 1 - 4® PEP Modular Computers GmbH
PB-SIO4AIntroduction
1.3 Functional Block Diagram
Figure 1-3: Functional Block Diagram of the PB-SIO4A
DUART
ST102
DRIVER / RECEIVER
OPTOISOLATION*
DUART
* Optoisolation is optional
ST101
1.4 PB-SIO4A External Interfacing
Connection of the PB-SIO4A piggyback to external devices is a function of the specific
carrier board for the piggyback. In conjunction with the carrier board there are various
possibilities for connecting the I/O channels of the piggyback to external devices.
For the carrier boards themselves there are three types of connectors available.
Front Panel:
•50-pin male, double row, flat-ribbon cable connector head
In conjunction with the carrier board’s connectors, there is also the possbility of providing connection to external devices using the AD-SIO4 adapter. This adapter utilizes
either of the carrier board’s flat-ribbon connectors to provide 4, 15-pin female, Dsub connectors. One connector for each channel of the PB-SIO4A. Two PB-SIO4A’s and two of
these adapters can be combined to provide 8 serial I/O channels. The AD-SIO4 is
optional and must be ordered separately. See chapter 4 of this manual for a description
of the AD-SIO4.
ID 19958, Rev. 0300Page 1 - 5® PEP Modular Computers GmbH
ID 19958, Rev. 0300Page 1 - 6® PEP Modular Computers GmbH
PB-SIO4AIntroduction
1.6 Technical Specifications
Table 1-1: PB-SIO4A Technical Specification
PB-SIO4ASpecification
StandardRS422 or RS485
Number of Channelsfour per PB-SIO4A module
Controllertwo MC68681 DUART’s (one pro port pair)
Transfer Ratesasynchronous: up to 115,200 Baud
Programmable Data Format•5 ... 8 bit, plus parity
•odd, even, no parity, and force parity
•1, 1½, and 2 stop bits
Programmable Channel Modes•normal, full duplex
•automatic echo
•local loopback
•remote loopback
Counter / Timertwo 16-bit (one for each DUART)
Identification ByteE7 hex
DTACK Generationon board
Power Supply5V DC, ± 5%
Power Consumption0.4A, typical
Temperature RangeOperating:0°C ...+70°C (Standard)
Switch off all power to the system and ensure that there are NO
external cables connected to the carrier board or to any optional
adapters connected to the carrier board before installing the PBSIO4A. Failure to do so could endanger your life/health and may
damage your board or system.
ESD Equipment!
Your PB-SIO4A board contains electrostatically sensitive devices.
Please observe the necessary precautions to avoid damage to
your board:
•Discharge your clothing before touching the assembly. Tools
must be discharged before use.
•Do not touch components, connector-pins or traces.
•If working at an anti-static workbench with professional discharging equipment, please do not omit to use it.
Note!
The PB-SIO4A can be installed in any free carrier board position,
and can be combined with any other type of piggyback module on a
carrier board. The only restraint here being the external interfacing
requirements, in particular, what type of cable connection is
required. It is the responsibilty of the system integrator to ensure
proper external interfacing to the PB-SIO4A.
To install a PB-SIO4A piggyback proceed as follows:
•ensure that the safety requirements indicated above are observed
•as required, ensure that the piggyback and carrier board are properly configured
(see appropriate documentation for configuration)
•if required, remove the carrier board and optional adapters from the system
•ensure the proper orientation of the PB-SIO4A to the carrier board before installing
(see appropriate documentation for orientation)
•press the piggyback onto the carrier board until fully seated
Note!
The PB-SIO4A can be securely mounted to the carrier board via
screws and stand offs as appropriate
ID 19958, Rev. 0300Page 2 - 3® PEP Modular Computers GmbH
PB-SIO4AInstallation
•if required, repeat this process for a second piggyback on this carrier board
•install the carrier board and optional adapters as required
•connect external interfacing cables to the carrier board and optional adapters as
required
•ensure that the carrier board, optional adapters, and interfacing cables are properly
secured
2.2 Software Installation
2.2.1Driver Installation
Drivers are available for various operating systems but are not delivered with the PBSIO4A. If required, please order the appropriate driver separately.
For installation of any required driver, please refer to the driver documentation itself.
ID 19958, Rev. 0300Page 2 - 4® PEP Modular Computers GmbH
PB-SIO4A
Configuration
Chapter
Configuration
3.1PB-SIO4A Address Map and ID Byte................................... 3 - 3
3.4.3PB-SIO4A to Carrier Board to AD-SIO4 ...................... 3 - 7
3
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Page 3 - 1® PEP Modular Computers GmbH
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® PEP Modular Computers GmbH
PB-SIO4AConfiguration
3.Configuration
3.1 PB-SIO4A Address Map and ID Byte
The PB-SIO4A is addressed (odd byte access) by using the carrier board base address
and one of the following offsets for the piggyback location:
Piggyback location A ( the upper position on the carrier board)
Base Address + $01DUART1
Base Address + $21DUART2
Base Address + $41ID Byte
Piggyback location B ( the lower position on the carrier board)
Base Address + $81DUART1
Base Address + $A1DUART2
Base Address + $C1ID Byte
The PB-SIO4A has an ID Byte of $E7 (RS422/RS485).
3.2 VMEbus Interrupts
Each DUART device is able to issue an interrupt request (*IRQ) to the carrier board. In
the event of simultaneous interrupt requests those from DUART #1 have priority over
those from DUART #2.
The interrupt level is set by the carrier board. See the carrier board documentation for
setting of the level. The interrupt vector itself is provided by the DUART.
ID 19958, Rev. 0300Page 3 - 3® PEP Modular Computers GmbH
PB-SIO4AConfiguration
$$
3.3 Jumper Settings
The jumper positions B53 to B69 are located on the rear side of the PB-SIO4A and are
solder bridges. Jumpers B51 and B52 are located on the front side of the PB-SIO4A and
if installed are wire bridges. They are set at the factory as required and should not be
changed.
Note!
Before operating the PB-SIO4A ensure that the B51 and B52
jumper settings are set correctly according to the application. No
external VCCext may be applied to the non-optocoupler version,
and, correspondingly, external VCCext must be applied to optocoupler versions.
ID 19958, Rev. 0300Page 3 - 5® PEP Modular Computers GmbH
PB-SIO4AConfiguration
3.4.2PB-SIO4A/Carrier Board Connector ST102
This is a twenty-six pin, dual row male header connector which provides interfacing
between the PB-SIO4A and the application side of the carrier board.
Table 3-3: Pinout of Connector ST102
SignalPinPinSignal
+RxD D2625+RxD D
GndE2423-TxD A
+TxD A2221VccE
+RxD A2019-RxD A
GndE1817-TxD B
+TxD B1615VccE
+RxD B1413-RxD B
GndE1211-TxD C
+TxD C109VccE
+RxD C87-RxD C
GndE65-TxD D
+TxD D43VccE
-RxD D21-RxD D
ID 19958, Rev. 0300Page 3 - 6® PEP Modular Computers GmbH
PB-SIO4AConfiguration
3.4.3PB-SIO4A to Carrier Board to AD-SIO4
Table 3-4: PB-SIO4A to Carrier Board to AD-SIO4 Pinout Table (Both Positions)
POS./
DUART
SignalST102
Carrier
Board
PDPINSCON/CH
-RxD D1, 2502411
+RxD D25,26492310
VccE3482215
+TxD D447218
-TxD D546209
2
U
P
P
E
GndE645191,7
-RxD C7441811
+RxD C8431710
VccE9421615
+TxD C1041158
-TxD C1140149
GndE1239131,7
-RxD B13381211
+RxD B14371110
AD-
SIO4
BU6
AD-SIO4
Front Panel
BU4D
BU3C
R
1
VccE15361015
+TxD B163598
-TxD B173489
GndE183371,7
-RxD A1932611
+RxD A2031510
VccE2130415
+TxD A222938
-TxD A232829
GndE242711,7
26
25
not used
not used
BU2B
BU1A
ID 19958, Rev. 0300Page 3 - 7® PEP Modular Computers GmbH
PB-SIO4AConfiguration
Table 3-4: PB-SIO4A to Carrier Board to AD-SIO4 Pinout Table (Both Positions)
POS./
DUART
SignalST102
Carrier
Board
PDPINSCON/CH
-RxD D1, 2242411
+RxD D25,26232310
VccE3222215
+TxD D421218
-TxD D520209
2
L
O
W
E
GndE619191,7
-RxD C7181811
+RxD C8171710
VccE9161615
+TxD C1015158
-TxD C1114149
GndE1213131,7
-RxD B13121211
+RxD B14111110
AD-
SIO4
BU6
AD-SIO4
Front Panel
BU4D
BU3C
R
1
VccE15101015
+TxD B16998
-TxD B17889
GndE18771,7
-RxD A196611
+RxD A205510
VccE214415
+TxD A22338
-TxD A23229
GndE24111,7
Legend:POS(ition)/DUART, P, D; CON/CH
where:P = position on carrier board
D = DUART
CON = connector
CH = channel
BU2B
BU1A
ID 19958, Rev. 0300Page 3 - 8® PEP Modular Computers GmbH
The AD-SIO4 is a special adapter designed to provide front panel connection to the PBSIO4A using 15-pin Dsub connectors as opposed to the 50-pin connector provided by
the carrier board.
This adapter consists of a separate, 8 HP front panel with four, 15-pin female Dsub connectors mounted on the front side for external device connection, and two, 24-pin, male
dual row connectors for internal connection to the PB-SIO4A carrier board. Connection
from the carrier board to the adapter is done via a 50-way, flat band cable with a 50-pin
dual row female connector for the carrier board, and two, 24-pin dual row female connectors for connection to the adapter. This cable allows for the connection of two PBSIO4A’s to two AD-SIO4’s where pins 25 and 26 are not used. See Table 3-4 for the
pinout of this cable.
4.2 Adapter Overview
Figure 4-1: Front View of the AD-SIO4 with Dsub Pin Layout
BU2BU3
Channel
B
BU1
Channel
A
Channel
C
BU4
Channel
D
VccE 15
- RxD 11
+RxD 10
Pin 15 is for use only with
the optocoupler version
of the PB-SIO4A.
- TxD 9
8 + TxD
7 Gnd
1 Gnd
ID 19958, Rev. 0300Page 4 - 3® PEP Modular Computers GmbH
PB-SIO4AAdapter AD-SIO4
$$
$$
Figure 4-2: Rear View of the AD-SIO4
2423
BU5
12
2423
BU6
12
Connector BU6 is for use with the PB-SIO4A. Connector BU5 is reserved for use with
the PB-SIO4, another serial interface piggyback from PEP.
RESERVED DO NOT USE
(see note below)
USE FOR PB-SIO4A
Note!
Always ensure that the correct connector of the adapter cable is
connected to BU6. See Table 3-4 for cable pinout.
Note!
For use with the PB-SIO4A ensure that there is no cable connected
to BU5. Failure to comply with this will result in misfunctioning and
possible damage to equipment.
ID 19958, Rev. 0300Page 4 - 4® PEP Modular Computers GmbH
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