Bailey INFI 90 LAN-90 PCV User manual

Process Control and
Automation Solutions
from Elsag Bailey Group
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E97-811-21
LAN-90®Process Control View (PCV®)
Harmony/MICRO-DCI Protocol Specific Driver (PSD)
(Software Release 5.2)

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I-E97-811-21B
Preface
This manual provides general information and guidance with
respect to:
• The Harmony MICRO-DCI Protocol Specific Driver (PSD).
• Hardware requirement and cable connections.
• PSD start-up requirements.
• Device and data addressing during configuration of the
interface.

I-E97-811-21B
®
List of Effective Pages
Total number of pages in this instruction is 20, consisting of the following:
Page No. Change Date
Preface Original
List of Effective Pages Original
iii through v Original
1-1 through 1-3 Original
2-1 through 2-2 Original
3-1 through 3-3 Original
4-1 through 4-3 Original
A-1 Original
B-1 through B-2 Original
C-1 Original
When an update is received, insert the latest changed pages and dispose of the super-
seded pages.
NOTE: On an update page, the changed text or table is indicated by a vertical bar in the outer mar-
gin of the page adjacent to the changed area. A changed figure is indicated by a vertical bar in the
outer margin next to the figure caption. The date the update was prepared will appear beside the
page number.

Table of Contents
Page
I-E97-811-21B iii
SECTION 1 - INTRODUCTION....................................................................................................1-1
OVERVIEW ..................................................................................................................1-1
REQUIREMENTS .........................................................................................................1-1
Hardware Requirements.........................................................................................1-1
Software Requirements ..........................................................................................1-2
GLOSSARY...................................................................................................................1-2
REFERENCES..............................................................................................................1-3
SECTION 2 - INSTALLATION.....................................................................................................2-1
SETUP DETAILS FOR RS-232-C/485 CONVERTERS ....................................................2-1
PSD ASSOCIATED FILES DIRECTORY ASSIGNMENTS.................................................2-2
SECTION 3 - CONFIGURATION.................................................................................................3-1
PSD START-UP FILE ....................................................................................................3-1
PSD DATA TYPE ASSOCIATION WITH HARMONY DATA TYPES ....................................3-2
Harmony Data Type 0, Unsigned Integer ................................................................3-3
Harmony Data Type 4, Float ..................................................................................3-3
Harmony Data Type 5, Double ...............................................................................3-3
Harmony Data Type 8, Byte Oriented Digital ..........................................................3-3
Harmony Data Type 12, ASCII Text ........................................................................3-3
SECTION 4 - OPERATION..........................................................................................................4-1
OVERVIEW ..................................................................................................................4-1
PSD AND EXECUTIVE INTERDEPENDENCE ................................................................4-1
THE PSD START-UP SEQUENCE .................................................................................4-1
PSD PRIMARY FUNCTIONS ..........................................................................................4-2
PROTOCOL/DEVICE SPECIFIC ADDRESSING VALIDATION ........................................4-2
APPENDIX A - MICRO-DCI CONTROLLER DATA ADDRESSING..........................................A-1
MICRO-DCI CONTROLLER DATA ADDRESSING ......................................................... A-1
APPENDIX B - ERROR MESSAGE TABLE...............................................................................B-1
ERROR MESSAGE TABLE........................................................................................... B-1
APPENDIX C - MODBUS CABLE CONNECTIONS...................................................................C-1
MICRO-DCI CABLE CONNECTIONS ............................................................................ C-1

iv I-E97-811-21B
No. Title Page
List of Figures
®
2-1. MICRO-DCI RS-485 Physical Interconnections ...................................................... 2-1
C-1. MICRO-DCI Interface Cable Layouts ......................................................................C-1
List of Tables
No. Title Page
2-1. Hardware Requirements ........................................................................................ 2-2
3-1. Harmony/MICRO-DCI Data Types ......................................................................... 3-2
4-1. Group Size, Generic versus MICRO-DCI Data Type ................................................ 4-3
A-1. Legal MICRO-DCI Controller Data Addressing........................................................ A-1
B-1. Error Message Table ..............................................................................................B-1

I-E97-811-21B v
Trademarks and Registrations
Registrations and trademarks in this document include:
® Elsag Bailey Registered trademark of Elsag Bailey Process Automation.
® INFI 90 Registered trademark of Elsag Bailey Process Automation.
® INFI-NET Registered trademark of Elsag Bailey Process Automation.
® Intel Registered trademark of Intel Corporation.
® LAN-90 Registered trademark of Elsag Bailey Process Automation.
® PCV Registered trademark of Elsag Bailey Process Automation.
® QNX Registered trademark of QNX Software Systems.

OVERVIEW
I-E97-811-21B 1 - 1
SECTION 1 - INTRODUCTION
OVERVIEW
This document describes the LAN-90 PCV Harmony Protocol
Specific Driver (PSD) for data communication with the
Bailey-Fischer & Porter MICRO-DCI controllers.
This PSD contains all device specific descriptives for address-
ing the various MICRO-DCI devices for data communication.
The PSD initiates all communication transactions for the inter-
face. It prompts the Harmony Executive for requests to per-
form any and all data transactions with the MICRO-DCI
devices.
Specifically, the MICRO-DCI driver supports the MICRO-DCI
host to instrument commands for reading and writing data.
The PSD processes Harmony Executive requests to:
•Parse and evaluate text strings entered via the Harmony
Editor for the device specific parameters: MICRO-DCI
device type and address, data point address, group data
point range.
•Construct protocol specific transaction command mes-
sages.
•Initiate communication with devices, monitor completion
of transactions, send responses back to the Harmony
Executive.
•Return status information regarding itself and device com-
munication to the Harmony Executive.
The PSD converts data between the MICRO-DCI controller for-
mat and the Harmony data type format associated with the
data group being processed. Tag parameters inherit the Har-
mony data type of the data group. The MICRO-DCI data type
associated with a data group is determined from the group
address.
REQUIREMENTS
Hardware Requirements
The communication port on the MICRO-DCI controllers is an
RS-485 four-wire port. Multiple MICRO-DCI controllers may be
networked as multidropped nodes. LAN-90 PCV connects to

INTRODUCTION
GLOSSARY
1 - 2 I-E97-811-21B
®
this network as the master node. Normal serial port limitations
apply as described in the PCV manual instructions to set up
the CIU.
The LAN-90 PCV computer requires the use of an external
RS-232-C to RS-485 adapter in order to communicate with the
MICRO-DCI controllers. The RS-232-C to RS-485 converter
which was used in testing the PSD, was supplied by Inmac Inc.
(part number 800052).
The Bailey-Fischer & Porter SCADA adapter was used in the
development of this PSD. If a SCADA adapter is in use, it need
not be replaced.
The provided setup information should be verified with the
documentation included with the adapter.
Software Requirements
The PSD needs the Harmony Executive and Editor to form a
Harmony interface for LAN-90 PCV. To make the Harmony
Executive available, the Harmony option must be enabled
under the LAN-90 PCV System Options menu.
GLOSSARY
B-Type An eight-bit unsigned integer data variable in a MICRO-DCI
controller. A B-Type variable can be read or written.
CIU
(Computer Interface Unit) A device used to connect a host computer system to the Elsag
Bailey INFI-NET®data highway.
C-Type A three-byte float data variable in a MICRO-DCI controller. A
C-Type variable can be read or written.
Harmony The LAN-90 PCV external device interface.
H-Type A five-byte float data variable in a MICRO-DCI controller. An
H-Type variable can be read or written.
LAN
(Local Area Network) A network whose nodes are connected in relatively close prox-
imity to each other.
LAN-90 PCV
(LAN-90 Process
Control View)
The software package comprising the operators’ console, data
acquisition and local area network software developed and
manufactured by Elsag Bailey Inc. running under the QNX®
operating system.
L-Type A digital or boolean data variable (bit) in a MICRO-DCI control-
ler. A L-Type variable can be read or written.
MICRO-DCI The Bailey-Fischer & Porter control station family. The com-
munication protocol over the multidrop RS-485 network is a

INTRODUCTION
REFERENCES
I-E97-811-21B 1 - 3
single master/multiple slave protocol for which the LAN-90
PCV is installed as the master drop.
PSD
(Protocol Specific Driver)
This acronym refers to device and protocol specific interfaces
developed for the LAN-90 PCV Harmony optional software.
RTDB
(Real-Time DataBase) The LAN-90 PCV database comprising a set of console tags
whose values, states and other information are maintained in
real-time.
REFERENCES
•LAN-90 PCV Software Release 5.2 Installation manual,
I-E97-811-1.
•LAN-90 PCV Software Release 5.2 Configuration and Oper-
ation manuals, I-E97-811-2.1 and I-E97-811-2.2.
•PCV Subsystem Interface Communications Driver API Ref-
erence manual, I-E97-807-16, Rev. 1.1.
•LAN-90 PCV Process Control View (PCV), Harmony - Exter-
nal Device Interface, I-E97-808-19.
•MICRO-DCI MODULAR CONTROLLER, Instruction Bulle-
tin Control Room Products, 53MC5000, Revision 1.

SETUP DETAILS FOR RS-232-C/485 CONVERTERS
I-E97-811-21B 2 - 1
SECTION 2 - INSTALLATION
SETUP DETAILS FOR RS-232-C/485 CONVERTERS
Setup details for the Inmac converter:
1. Set the PSD’s start-up file to use even parity, eight data bits.
2. Set converter to DCE, SIMU, t-on/r-on.
3. Use a straight cable. (No loop backs or cross overs required).
4. Remove any other master - only one master is allowed.
5. Wiring - the master transmits on the slave’s receive lines:
NOTE: The RS-485 Txd may not rest in the tri-state condition but
must instead rest in the maximum (+12 VDC) or minimum voltage
(-12 VDC) state. Therefore, these converters are used in the RS-422
mode to disable the tri-state mode on the master.
The Bailey-Fischer & Porter SCADA adapter was used in the
development of this PSD. However, a third party SCADA
adapter may be used.
The following information, provided for setup purposes, should
be verified with the documentation provided by Bailey-Fischer
& Porter. Use NO parity in the start-up file.
F&P Inmac
Tx+ 19 - 3
Tx- 20 - 4
Rx+ 21 - 1
Rx- 22 - 2
Figure 2-1. MICRO-DCI RS-485 Physical Interconnections

INSTALLATION
PSD ASSOCIATED FILES DIRECTORY ASSIGNMENTS
2 - 2 I-E97-811-21B
®
PSD ASSOCIATED FILES DIRECTORY ASSIGNMENTS
The Bailey-Fischer & Porter MICRO-DCI PSD task name is
“microdci”. The driver is stored in directory:
“/bci/pcv/bin/”
Support files for the MICRO-DCI PSD task reside in the direc-
tory:
“/bci/pcv/etc/win/psd/microdci/”
Support files include:
The help file for the MICRO-DCI PSD is stored in directory:
“/bci/pcv/etc/win/help/config/psd/microdci/”
The help file name is:
For the actual installation of the PSD, see Elsag Bailey docu-
ment I-E97-808-19 where the steps are described in SECTION
2 and APPENDIX A.
Table 2-1. Hardware Requirements
Interface Port Adapter
RS-232-C (Basic port or Intell-
icon Multiport ISA add-on
card)
Bailey-Fischer & Porter SCADA ADAPTER
(RS-232-C to host, RS-485 to MICRO-DCI
controllers)
Requires a 24 VDC power supply to power
the SCADA ADAPTER.
External in-line RS-232-C/RS-485 adapter
NOTE: The RS-485 Txd may not rest in the
tri-state condition but must instead rest in
the maximum (+12 VDC) or minimum volt-
age (-12 VDC) state.
“error.msg” This file contains error messages used by the
Harmony Editor for the protocol specific con-
figuration data fields.
“.ttl” Help title file. This file contains the single
text line in upper case: “MICRO-DCI PSD
HELP FILE”.
microdci.help This file is used by the Harmony Editor for
help with respect to the MICRO-DCI device
and data addressing configuration data
fields. It contains at the beginning of the file
the title text of the “.ttl” file in the form:
<ESC> TITLE “MICRO-DCI PSD HELP FILE”.

PSD START-UP FILE
I-E97-811-21B 3 - 1
SECTION 3 - CONFIGURATION
PSD START-UP FILE
The PSD task is started by the Harmony Executive which
assigns a task ID and priority and passes a start-up file name.
(See the following example format descriptions.) The start-up
file is an ASCII text file in which text lines of the following for-
mat contain the start-up arguments:
p:XXXXXXXXXX i:X b:BBBB d:N s:N a:XXX
p:
Specifies a port identification name, XXXXXXXXXX ,
in ASCII string. e.g., “/dev/ser1”
i: Specifies the port redundancy mode as:
N Non-redundant.
P Primary port.
S Secondary port for the primary port
on the preceding line.
b: Specifies the port baud rate, BBBB .e.g., “9600”.
d: Specifies the number of data bits, N .
s: Specifies the number of stop bits, N.
a:
Specifies parity, XXXX, ODD, EVEN or NONE.
For RS-422 use EVEN. For SCADA adapter use NONE.
The port and all its parameters are specified on one line.
NOTE: Redundant ports require two independent connections to the
same MICRO-DCI controllers. LAN-90 PCV connects, as host, to
MICRO-DCI controllers, as slaves, on the same multidrop RS-485
network. Since just one host can be accommodated on the RS-485
multidrop network, redundant ports cannot be implemented.
r: N
r
Specifies the Executive/PSD message exchange mode to be
Reply Blocked, 1, or Not Reply Blocked, 0. When this
parameter is not specified in the start up parameters, the
default Reply Blocked, 1, will be implemented.
The overall interface performance may be somewhat faster
in the Not Reply Blocked mode, therefore, this parameter
should always be set to Not Reply Blocked.

CONFIGURATION
PSD DATA TYPE ASSOCIATION WITH HARMONY DATA TYPES
3 - 2 I-E97-811-21B
®
w: NNN
w:
Specifies delay time NNN when the Executive message
exchange mode is Not Reply Blocked. When Reply Blocked
is specified, the delay time is ignored. The delay (sleep)
time is invoked when the Harmony Executive requires no
action from the PSD.
v: N
v:
Specifies the number of retries, N , that should be
performed when a port communication transaction fails.
u: NNNN
u:
Specifies the time interval, NNNN, within which a port
communication transaction reply must be received and
after which the transaction is set complete with time-out.
Timed out transactions on a port will be retried per the
retry specification when the current status of the port is
normal.
Start-up file example:
p:dev/ser1 i:P b:9600 d:8 s:1 a:EVEN Primary port
r: N Not reply blocked
w: 100 No action sleep time
v: 2 Number of retries
u: 2000 Transaction time-out
The PSD task will read the start-up file parameters only at
start-up or restart.
PSD DATA TYPE ASSOCIATION WITH HARMONY DATA TYPES
When assigning a data type to a group in the Group Definition
dialogue box, use the following information to complete the
Harmony data type field.
Table 3-1. Harmony/MICRO-DCI
Data Types
Data Type Data Type Descriptor
0 (B-Type) Unsigned Integer (0 - 255)
4 (C-Type) Float
5 (H-Type) Double
8 (L-Type) Digital Data
12 (A&F-Types) ASCII Text

CONFIGURATION
PSD DATA TYPE ASSOCIATION WITH HARMONY DATA TYPES
I-E97-811-21B 3 - 3
Harmony Data Type 0, Unsigned Integer
A Harmony data type 0 (Unsigned Integer) is associated with
MICRO-DCI B-Type variables only. B-Type values have a range
0 to 255. The maximum number of B-Type variables that may
be assigned to a Harmony data group is 50.
Harmony Data Type 4, Float
Harmony data type four (Float) is associated with MICRO-DCI
C-Type values. The maximum number of C-Type variables that
may be assigned to a Harmony data group is 16.
Harmony Data Type 5, Double
Harmony data type five (Double) is associated with MICRO-DCI
H-Type values. The maximum number of H-Type variables that
may be assigned to a Harmony data group is ten.
Harmony Data Type 8, Byte Oriented Digital
Harmony data type eight (Byte Oriented Digital Data) is associ-
ated with L-Type MICRO-DCI bit variables. The maximum
number of L-Type variables that may be assigned to a Har-
mony data group is 400.
The first data point of the group must be evenly divisible by
eight.
Harmony Data Type 12, ASCII Text
Harmony data type 12 (ASCII Text) may be associated with
MICRO-DCI controller A-Type and F-Type data. Only one
A-Type or F-Type variable may be assigned to a Harmony data
group. For A-Type the text string length is ten characters. For
F-Type it is five characters.

OVERVIEW
I-E97-811-21B 4 - 1
SECTION 4 - OPERATION
OVERVIEW
The PSD software works in tandem with the Harmony 90 sys-
tem option to provide an interface between LAN-90 PCV and
the MICRO-DCI system.
The LAN-90 PCV hardware link up to the RS-485 multidrop
network of MICRO-DCI controllers is through an RS-232-C
port to an external RS-232-C/RS-485 adapter.
PSD AND EXECUTIVE INTERDEPENDENCE
The PSD provides Protocol/Device Specific configuration refer-
ence information and data communication.
The reference information is used by the PSD to evaluate the
device data group and data point definitions entered via Har-
mony. These definitions are entered as text strings that are
parsed and evaluated by the PSD before they are accepted into
the device configuration file. If the data is incorrect, a message
will appear in the error log.
The PSD task performs communication transactions with the
controllers. For each transaction, the PSD:
•Sends a MICRO-DCI command message to the specified
controller.
•Waits for a reply to the command message.
•Processes the reply message.
Each MICRO-DCI communication data transaction is per-
formed in direct response to a request from the Harmony Exec-
utive.
THE PSD START-UP SEQUENCE
After the PSD has been started by the Executive and has
accepted the start-up parameters, it initializes its communica-
tion port. It initiates a message exchange with the Executive to
obtain all data group definitions, in order of group number, to
record the protocol or device specific components of each
group's definition. This serves to associate group numbers
with group definitions which include port identification and
device addresses. It further serves to track the status of each
port, device and data group.

OPERATION
PSD PRIMARY FUNCTIONS
4 - 2 I-E97-811-21B
®
PSD PRIMARY FUNCTIONS
The primary role of the PSD is to provide protocol specific com-
munication for exchanging data between the LAN-90 PCV Har-
mony Executive and the MICRO-DCI controllers that are
addressable via the specified ports.
Only the driver contains external device and communication
protocol specific data. The PSD provides all protocol and device
specific definitions and algorithms. This includes logic to:
•Evaluate device and protocol specific configuration param-
eters entered via the Harmony editor.
•Build protocol messages for supported transactions.
•Recognize data addressing conventions and restrictions
with respect to the supported devices.
•Adhere to the protocol specific transaction handling
sequences for both normal and error replies.
•Perform data format conversion for all supported device
data types.
•Perform appropriate extraction/insertion of data from/to
transaction messages with respect to device data type.
The PSD task receives a request from Harmony for each data
transaction that it performs. Once a request has been received,
the PSD performs the action independently and on completion
returns a reply message to Harmony.
The PSD monitors completion of each device transaction that it
has initiated. If the device does not respond within a preset
time interval, the transaction is retried a number of times
according to the retry count set in the start-up file. After retries
have been exhausted, the PSD task returns an error message
which is printed in the error log.
PROTOCOL/DEVICE SPECIFIC ADDRESSING VALIDATION
The MICRO-DCI PSD evaluates all user entered port, device,
group and controller point address parameters.
The port serviced by the PSD is defined in the start up file. The
port referenced in a device definition must be the primary port
as defined in the start up file.
Groups created for a specific Harmony data type, must associ-
ate with (map to) an appropriate MICRO-DCI controller data
type (Table 4-1). The group address entered in the group defini-
tion will contain the data type and the starting address.

OPERATION
PROTOCOL/DEVICE SPECIFIC ADDRESSING VALIDATION
I-E97-811-21B 4 - 3
For example, L800 would indicate to the driver that the group
contains digital elements and that the first element of the
group is 800 in the controller. A tag could be assigned to any
of the elements up to, but not including, the limit of the group
size plus the starting address. If the group size in this case was
240, L1039 would be valid for a tag assignment, as would L800
or any number in between.
Harmony limits the data group size by Harmony data type. The
MICRO-DCI PSD further limits data group size by related
MICRO-DCI controller model and data type (Table 4-1).
Table 4-1. Group Size, Generic versus MICRO-DCI Data Type
Harmony
Data Type MICRO-DCI Data Type Harmony Data Type Descriptor
Maximum
MICRO-DCI
Group Size
0 B-Type (8 bit
unsigned integer) Unsigned Short Integer (high byte set to 0) 50
4 C-Type IEEE Float
(Real 4 - Intel®format) 16
5 H-Type IEEE Double
(Real 8 - Intel format) 10
8 L-Type
(1 bit boolean) Byte oriented Digital Data (bit boolean data) 400
12 A -Type
(10 character text
string)
F-Type (5 charac-
ter text string)
ASCII text 1
(Harmony
limitation)

MICRO-DCI CONTROLLER DATA ADDRESSING
I-E97-811-21B A - 1
APPENDIX A - MICRO-DCI CONTROLLER DATA ADDRESSING
MICRO-DCI CONTROLLER DATA ADDRESSING
Table A-1. Legal MICRO-DCI Controller Data Addressing
Controller
Type Data Type Data File Size Addressing Range
53MC5000 L-Type 2048 L0000 through L2047
B-Type 768 B000 through B767
C-Type 768 C000 through C767
H-Type 128 H000 through H127
A-Type 320 A000 through A319
F-Type 640 F000 through F639
53SL5100 L-Type 2048 L0000 through L2047
B-Type 768 B000 through B767
C-Type 768 C000 through C767
H-Type 128 H000 through H127
A-Type 320 A000 through A319
F-Type 640 F000 through F639
53IT5100 L-Type 2048 L0000 through L2047
B-Type 768 B000 through B767
C-Type 768 C000 through C767
H-Type 128 H000 through H127
A-Type 320 A000 through A319
F-Type 640 F000 through F639
MC2000 L-Type 2048 L0000 through L2047
B-Type 768 B000 through B767
C-Type 768 C000 through C767
H-Type 128 H000 through H127
A-Type 320 A000 through A319
F-Type 640 F000 through F639

ERROR MESSAGE TABLE
I-E97-811-21B B - 1
APPENDIX B - ERROR MESSAGE TABLE
ERROR MESSAGE TABLE
Table B-1. Error Message Table
Number Message
01 Transaction failed to complete - miscellaneous reason.
02 Timeout error on communication.
03 Error reply from host device.
04 Corrupt reply - unrecognizable reply.
05 Communication error with port device.
06 Address error.
07 Mode error.
08 Mode error.
09 Data type error.
10 Unsupported request.
11 Port selection invalid.
12 Device address invalid.
13 Group definition invalid.
14 Illegal data type selected for group.
15 Illegal port.
16 Port queue full.
17 Too many devices.
18 Illegal device address.
19 Group too large.
20 Device reply data field size error.
21 Harmony/Driver internal error.
22 Group defn changed, data rejected.
23 Cannot open startup file.
24 No port defined in start-up file.
25 Too many ports specified in start-up file.
26 Illegal baud rate specified.
27 For MICRO-DCI, RS-232-C no. of data bits must be eight.
28 For MICRO-DCI, RS-232-C no. of stop bits must be one or
two.
29 For MICRO-DCI, RS-232-C parity must be NO, ODD or
EVEN.
30 Invalid port parameter specified.
31 Port initialization error.
32 Receive message LRC error.
33 Startup file read error.
34 Screen entry format error.