DPS SPS 8 Operation Manual

DPS INC

"Your Partners in Telemetry Monitoring Systems"

8 Port Serial Switch

Fig. 1 - SPS 8 expands ASCII Ports up to Eight Times

Operation Guide

Table Of Contents

Overview ....................................1

Functional Schematic ..........................2

Typical MUX Applications .....................2

Shipping List .................................2

Installation...................................2

Configuration ................................2

Modem Tuning ...............................4

LED Display Status............................5

ACK Button..................................5

Hardware Connections.........................5

Connectorized Model Layouts...................6

Operation....................................7

Specifications.................................8

Options & Model Numbers .....................8

Overview

DPS’s 8 Port Serial Switch allows you to connect up to eight
data sources to one port on a collection device , such as the Net
Dog 82IP. Commands from an interrogating ASCII terminal
control the switch to route data to the appropriate port. Each
channel has a 16K buffer that allows data to be moved between
ports at different data rates.

The 8 Port Serial Switch is available with wire-wrap pins for

external connection or with DB9 connectors.

The Switch consists of nine interface ports interconnected
and controlled by a processor. Associated with each port is a
“docking module” socket that allows the physical interface to
the outsideworldto be configured to match the associated com­munications channel or device. This model of the 8 Port Serial
Switch is equipped with RS 232 interfaces on each port.

The 8 Port Serial Switch is housed on a plug-in board that fits
in a 1-3/4" rack-mount housing. The back of the housing pro­vides DB9 connectors for connecting the associated devices.
The P.C. board can be changed rapidly without removing any
of the connections.

The front panel of the 8 PortSerial Switch provides LEDs for
monitoring unit activity and a craft port for configuration.
There is a fuse alarm indicator on the front panel and a fuse
alarm output relay that activates when the fuse blows.

The 8 Port Serial Switch operates on either -24 or -48 Volts
DC, depending on the option. (Options are described in the Op­tions and Model Numbers section on page 8.)

Variable Data Rates

In addition to switching between multiple ports, the 8 Port
Serial Switch will select a preset data rate for each port. Avail­able data rates are 300, 1200, 2400 and 9600 Baud.

T/MUX Software

The MUX is programmed for various parameters with
T/ASCMUX software, running under T/Config software on a
personal computer. The craft port on the front panel is easily
accessed any time the configuration needs changing.

Downloadable Firmware

Future product upgrades will be easy to install with the
downloadable firmware. Simply connect a P.C to the craft port
and load the new firmware from a diskette.

D-PC-186-10A-XV 1 OG119699
September 16, 1999

T/ASCMUX

T/kda

Fig.2-8Port Serial Switch Configures at the Front Panel

Craft Port

CTS
GND
TX

RX
DSR
RTS

RS232

-BATT.

GND

Fuse

Alarm

Common

Port

Craft

Port

LED's

ProcessorBuffer

Power

Regulator

Port

Port

Port

Port

CTS
GND
TX

RS232

RX

1

DSR
RTS

Port

2

CTS
GND
TX

RX

3

DSR
RTS

Port

4

Port

5

CTS
GND
TX

RX

6

DSR
RTS

Port

7

CTS
GND
TX

RX

8

DSR
RTS

Fig.3-8Port Serial Switch Routes Data by

Microprocessor

Functional Schematic

The illustration in Fig. 3 shows a functional schematic of the

8 Port Serial Switch.

Connect power wires to the wire wrap J2 or to the

¤

connectors in back of the Switch. See Hardware
Connections elsewhere in this guide for wire wrap or

CTS
GND
TX

RX
DSR
RTS

CTS
GND
TX

RX
DSR
RTS

CTS
GND
TX

RX
DSR
RTS

connector pin layouts.
Connect communications lines to other devices to

¤

the Switch.
Verify that the power is correct for the option (-24 or

¤

-48 VDC). See Options and Model Number section
at the end of this Operation Guide.

Insert the fuse in the fuse holder on the front panel.

¤

Connect the Switch Craft Port to a a dumb terminal

¤

or a P.C. with terminal emulation software. Refer to
the Configuration Section below for more
information.

Configuration

CTS
GND
TX

RX
DSR
RTS

The 8 Port Serial Switch is configured with a program called
T/ASCMUX. T/ASCMUX runs under a host program called
T/Config, which can host configuration software for a variety
of DPS products.

NOTE: T/ASC MUX also works with ASCII MUX product.

T/Config is included on the disk supplied with the Switch
unit. If T/ASCMUX is being run on a computerthat already has
T/Config installed, we recommend that you re-install the
T/Config on the T/ASCMUX disk to be sure the latest version
is running.

T/Config and T/ASC MUX Install

Place the T/ASCMUX disk in the A drive and type
a:<ENTER>.

Type TINSTALL <ENTER>. Follow the directions on the
screen.

Typical MUX Applications

The illustration in Fig. 4 shows the 8 Port Serial Switch inter­facing 8 ASCII sources to a DPS Net Dog 82IP equipped with
an ASCII interrogating port.

Shipping List

Verify the following items were included in the shipment:

¤

8 Port Serial Switch in a 1 rack unit case

¤

2 Mounting Brackets

¤

1 Real Fuse; 1 Dummy Fuse (for shipping)

¤

T/ASCMUX Software

¤

Configuration Cable

¤

ASCII MUX Operation Guide

Installation

¤

Unpack the 8 Port Serial Switch and all accessories.

¤

Attach the mounting brackets for the required rack
width.

¤

Mount the 8 Port Serial Switch case to the Rack.

¤

Remove fuse.

8 Port Serial Switch

Common

Port

Port

Port

Port

Port

Port

Port

Port

Port

1

2

3

4

5

6

7

8

Serial Port

Netdog 82IP

To ASCII

Terminal via

LAN or Dial Line

Fig. 4 - ASCII MUX Gathers Alarm Data from

Distributed data Sources into one Port

Data Sources

Source #1

Source #2

Source #3

Source #4

Source #5

Source #6

Source #7

Source #8

OG119699 2 D-PC-186-10A-XV

September 16, 1999

Start T/ASC MUX

Select the hard drive and the T/Config directory.
Type T/CONFIG <ENTER>.
Highlight T/ASCMUX <ENTER>.
The first screen will request initials. Enter your initials and

press <ENTER>.

Fig. 5 - Main Menu Lists the Functions Available in

T/ASCMUX

Main Menu

The Main Menu (Fig. 5) lists the functions available in
T/ASCMUX. Each of these Main Menu items is explained in
the following paragraphs. Most fields will have an associated
“default box” that appears. To select from the default box press
Tab and use the Tab key or cursor arrows to highlight the de­sired value, then press <ENTER>.

Fig. 6 - Enter a New Name in the Open ASCII window or

Select from Default Box

Open ASCMUX

This selection is used to open an existing configuration or to
name a new one. When this function is selected a box will ap­pear with three fields. See Fig. 6 and Table A.

Table A - Field Descriptions in the Open ASCII MUX

Screen

Field Description

NAME Enter a new name or select an existing one from the de-

fault box. The name will appear in the Title Bar at the
top of the screen at all times. The name should be exclu­sive to this configuration.

SITE NAME Enter a name that describes the location of the unit.

(Mandatory field)

COMMENT Optional field for additional identifying information,

such as date or initials of preparer.

Fig. 7 - Set ASCII Port Parameters in the Edit

Configurations Screen

Edit MUX Configuration

This selection presents the Edit MUX Configuration screen.
See Fig. 7. Set parameters for each of the eight ports and the
MUX (common) Port in this screen. Parameters and their val­ues are explained in Table B.

Table B - Field Descriptions for the Edit Configuration

Screen

Field Description

Msg Timeout Time to delay before aborting incomplete message. En-

ter in tenths of seconds (10-255). Default is 100.

Baud Off, 300, 1200, 2400 and 9600. Select from default box.

Default 1200 Baud.

Parity EVEN, NONE, ODD. Select from default box. Default

NONE.

Word Length 7 BITS, 8 BITS. Select from default box. Default is 8.

Stop Bits 1 BIT, 2 BITS. Select from default box. Default is 1.
Interface TTL, RS232, RS422, RS485, 202. Select from default

box. Default is RS232.

Several “Hot Keys” are available in the Edit MUX Configu­ration screen. The line at the bottom of the screen lists them.

Table C - Hot Keys in the Edit Configurations Screen

Key Description

Tab Select default box.

Up Arrow Go to previous field.

F1 Go to previous port.
F2 Go to next port.
F8 Save.
F9 Help.

F10/Esc Go to first field or exit.

Craft Connect

Use this menu item when connecting to the craft port on the
front of the MUX for downloading or other functions.

NOTE: When using thisfunction, the MUX port is not active.

Fig. 8 - Select from Several Craft Port Functions in the

Craft Connect Menu

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September 16, 1999

Table D - Craft Connect Functions

Function Description

INQUIRE

DOWNLOAD Configure the unit using the selected configuration (re-

UPLOAD Retrieve configuration from the unit. Overwrites se-

MONITOR Monitor operational status. (Fig. 6) Screen shows local

Terminal - PAD Observe data on any port. Select port with function key.

QUIT Exit this function and return to the Main Menu.

Retrieve and display the unit*s configuration status.

fer to the title bar). Press <ENTER> to start.

lected configuration. Press <ENTER> to start.

alarm and control point status. (Shown in this screen
only.) It also displays four operational status points, for
use by DPS Technical Support. Press F7 for the Modem
Tuning window.
This function is not fully implemented at this time.

Fig. 9 - Monitor Screen Shows Status of Auxiliary Alarms

and Control Relay

Fig. 10 - Press F7 while in the Monitor Mode to Access the

Tune Modem Window

Modem Tuning

If the MUX is equipped with modems on any of the ports, set
the modem levels while in the monitor mode. Press F7 to access
the Modem Tuning Window (Fig. 10). Use the + (plus) and ­(minus) keys to select the port (selected port is displayed in the
first field of the window). With a level meter on the port to be
adjusted, use the keys listed in the window to control the trans­mit and raise or lower the level, as needed. The receive portion
of the modem has an AGC input, so requires no adjustment.

NOTE: Do not tune above -4dbm or below -34dBm as the
waveforms become distorted at those levels.

ular unit is configured. Several configurations can be reported.
A query box will ask for starting and ending configuration
names (press Tab to see a default box listing of existing config­urations), report destination andfile name (if outputting to file).

Fig. 11 - Configuration Computer Com Port Parameters

must be set before Downloading the MUX or Switch.

Software Parameters

Before a configuration can be downloaded, it is necessary to
set the configuration computer’s com port to match the MUX
craft port parameters. That is done in the Software Parameters
function. See Fig. 11 and Table E.

A sub-menu appears when this function is selected. Select
“Communications” from this sub-menu.Parameters and their
values are given in Table E. Select“Parameters” if you wish to
specify the report directory (Fig. 12).

Table E - Software Parameters Functions

Function Description

COM PC Com Port number (1-4).

BAUD Set only at 9600 Baud.

STOP BITS Select 1.

DATA BITS Select 8.

PARITY Select NONE.

MAX TIMEOUT Time to wait for a response (50-9999 Milliseconds). De-

fault is 3000.

MAX RESEND Number of requests before a timeout will be declared

(0-100). Default is 20.

SEND DELAY Amount of time before the next request is made. (1-100

seconds). Default is 1.

DIAL TYPE Not applicable.

QUIT Exit this function and return to the Main Menu.

Parameters Menu Item

Report Path Specify the Directory for report files. Normally this is

“Tconfig. See Fig. 12.

Reports

Use this menu item to run configuration reportsto the screen,
printer or file. Reports are useful in creating records and refer­ence files. Such files allow future reference to see how a partic-

OG119699 4 D-PC-186-10A-XV

Fig. 12 - Select “Parameters” from the Software Parame-

ters Menu to Define the Directory for Reports

September 16, 1999

Utilities

Use this menu item to copy or delete configurations and to
perform corrective functions at the direction of DPS technical
support.

A sub-menu appears when this function is selected. See Fig.
13 and Table F.

Table F - Utilities Functions

Function Description

COPY ASCII

MUX

REBUILD KEY

FILES

DELETE ASCII

MUX

TERMINAL General purpose dumb terminal.

QUIT Exit this function and return to the Main Menu.

Copies another configuration into the selected
configuration.

Repairs damaged index files. Use only at the direction
of DPS technical support.

Deletes the selected configuration from the database.

NOTE: The “Selected Configuration” is listed on the Title
Bar at the top of the screen.

Quit

Use this menu item to exit T/ASCMUX.

LED Display Status

Dual-color LED indicators on the front panel give mainte­nance personnel quick diagnostics of the operational status of
the ASCII MUX. TableG explains the LED functions in detail.

Table G - ASCII MUX LED Display Functions
LED Condition Meaning

FA OFF Fuse Normal

RED Fuse Blown

ALM RED Craft port is active.

LOD RED Download in progress.
LOC RED Craft Port active
CM1 BLINKING

ER1 RED Error condition.

CFG RED Needs download.

A1 - A4 RED Alarm point active.*

RLY RED Control relay operated.*

ASCII PORTS

1-8

RED

BLINKING

GREEN

GREEN Normal mode.

BLINKING

GREEN

BLINKING

RED

*Alarm and Control functions are reserved for possible
future use.

Receiving data on common port.

Transmitting Data on common port.

Transmitting data on respective port.

Receiving data on respective port.

Fig. 13 - Select Functions from Utilities Menu

ACK Button

The ACK Button performs an LED test. While the ACK but­ton is held in LED’s will illuminate in their solid color, alternat­ing from green to red and back.

Hardware Connections

The following illustrations show wiring pinouts for the
MUX.

DSR
GND

54321

9

RTS CTS

8

Craft Port Connector

The Craft Port is a female RS232 DB9 connector used as a
direct link into the MUX. Normally used to configure the
MUX. See Fig. 15.

RX

PIN # SIGNAL DESCRIPTION

TX

6

7

1

NC

2

TX

3

RX

4

NC

5

GND

6

NC

7

CTS

8

RTS

9

NC

Fig. 15 - Craft Port Pin-Outs

Not Connected
Transmit Data
Receive Data
Not Connected
Ground
Not Connected
Clear To Send
Request To Send
Not Connected

SPS-8

CRAFT

PORT

Fig. 14 - LED Indicators on the Front Panel Show Operational Status of the 8 Port Serial Switch.

D-PC-186-10A-XV 5 OG119699
September 16, 1999

DPS Telecom

FA

LOC

ER1

CFG

A1 A2 A3 A4 1 2 6 4 5 6 7 8RLYACK ALM CM1LOD

ALARMS ASCII PORTS

Wire Wrap Pin Layouts
and Rear Panel Connectors

Figs. 16 through 17 show the pinouts for J1 and J2 wire wrap

pins a on the rear panel.

J3 J1 J2

Fig. 16 - Wire-Wrap Connectors are Accessed from Rear

Connectorized Model Layouts

Figure 18 shows the back panel of a connectorized Switch.

Refer to Fig. 19 for the connector pin-outs.

2143658712111413161518 38

10

9

20

22 42

24 44

26 46

28 48

30 50

32 52

34 54

36 56

17 37

19 39

21 41

23 43

25 45

27 47

29 49

31 51

33 53

35 55

J1 Pin Layout

PIN # DESCRIPTION

1

N/C

3

CTS PORT 1

5

TXD PORT 1

7

N/C

9

CTS PORT 2

11

TXD PORT 2

13

N/C

15

N/C

17

N/C

19

N/C

21

CTS PORT 3

23

TXD PORT 3

25

N/C

27

CTS PORT 4

29

TXD PORT 4
N/C

31

N/C

33

N/C

35

N/C

37

CTS PORT 5

39

TXD PORT 5

41

N/C

43

CTS PORT 6

45

TXD PORT 6

47

N/C

49

N/C

51

N/C

53

N/C

55

Fig. 17 - Non-Connectorized Models Connect Directly to Wire-Wrap Pins at Back of Switch

PIN #

2
4
6

8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56

COMMON PORT PORTS 1 - 8

40

DESCRIPTION

N/C
GND PORT 1
RXD PORT 1
RTS PO RT 1
GND PORT 2
RXD PORT 2
RTS PO RT 2
N/C
N/C
N/C
GND PORT 3
RXD PORT 3
RTS PO RT 3
GND PORT 4
RXD PORT 4
RTS PO RT 4
N/C
N/C
N/C
GND PORT 5
RXD PORT 5
RTS PO RT 5
GND PORT 6
RXD PORT 6
RTS PO RT 6
N/C
N/C
N/C

J9 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22

J2 Pin Layout

PIN # DESCRIPTION

1

CTS PORT 7

3

TXD PORT 7

5

N/C

7

CTS PORT 8

9

TXD PORT 8

11

N/C

13

N/C

15

N.C. CTRL 1*

17

COM. CTRL 1*

19

N/C

21

ALARM 1 -*

23

ALARM 2 -*

25

ALARM 3 -*

27

ALARM 4 -*

29

N/C

31

N/C

33

N/C

35

N/C

37

N/C

39

TXD COMMON (MUX) PORT

41

DCD COMMON (MUX) PORT

43

N/C

45

FUSE ALARM

47

N/C

49

N/C

51

N/C

53

N/C

55

- BATTERY

FUSE ALARM

(NORMALLY OPEN FORM 'A' RELAY)

*For Future Implementation

DB9 FEMALE CONNECTORS

FUSE ALARM AND CONTROLS

PIN #

DESCRIPTION

2

GND PORT 7

4

RXD PORT 7

6

RTS PORT 7

8

GND PORT 8

10

RXD PORT 8

12

RTS PORT 8

14

N/C

16

N.O. CTRL 1*

18

N/C

20

N/C

22

ALARM 1 +*

24

ALARM 2 +*

26

ALARM 3 +*

28

ALARM 4 +*

30

N/C

32

N/C

34

N/C

36

N/C

38

DTR COMMON (MUX) PORT

40

RCV COMMON (MUX) PORT

42

GND COMMON (MUX) PORT

44

N/C

46

FUSE ALARM

48

N/C

50

N/C

52

N/C

54

N/C

56

GROUND

45

46

J20-J22
Not Used

ALARM POINTS 1 - 4

Frame
Ground

GND

-BATT

POWER

TERMINAL

BLOCK

J9 - J17

PINOUT FOR RS232 INTERFACE

1 ( N/C)
2(TXD)

3 ( RCV)
4 ( N/C)
5 ( GND)

6 ( N/C)
7 ( DCD)
8 ( DTR)
9 ( N/C)

Fig. 19 - Female DB9 Connector Pin-Outs on Rear of 8 Port Serial Switch.

OG119699 6 D-PC-186-10A-XV

Fig. 18 - Rear Panel of Connectorized Model

J18

PINOUT FOR FUSE ALM & CTRLS

1(F/ACOM)
2 (F/A N.O.)

3 ( N/C)
4 ( N/C)
5 ( N/C)

6 (CTRL N.C.)
7 (CTRL N.O.)
8 (CTRL COM)
9 ( N/C)

PINOUT ALARM POINTS

1 (ALM 1A)
2 (ALM 1B)

3 (ALM 2A)
4 (ALM 2B)
5 (ALM 3A)

J19

6 (ALM 3B)
7 (ALM 4A)
8 (ALM 4B)
9 ( N/C)

September 16, 1999

Operation

Dumb Terminal Operation

With a dumb terminal at the common port (either directly or
via some transport media), use the following procedure to se­lect the desired ASCII port:

1. After the terminal is connected, type @@@.

2. At the prompt, the currently selected port number will be

displayed.

3. Type S followed by the number of the desired port

<Enter>.

4. Type C<Enter> to connect to the desired port.

Operation via Net Dog

To access the common port of the SPS 8 using the Net Dog’s
reach through capability:

1. Connect a Telnet Client to TCP port 2002 at the address of

the desired Net Dog.

2. Get the clear channel.

3. After the terminal is connected, type @@@.

4. At the prompt, the currently selected port number will be

displayed.

5. Type S followed by the number of the desired port

<Enter>.

6. Type C<Enter> to connect.

D-PC-186-10A-XV 7 OG119699
September 16, 1999

Specifications

"

Options & Model Numbers

Specifications for the Switch are shown below.

Dimensions 17.0"(W) X 12.0"(D) X 1.75"(H)
Mounting The MUX can be mounted in a 19" or 23" rack.

The MUX unit can also be wall mounted.

Power Input -24 DC unit: -18 to -36 VDC @ 200 mA

-48 DC unit: -36 to -72 VDC @ 180 mA (max)

30 mA (typical).
Fuse 1/2 Amp
Operating Temperature Range

0 degrees to +60 degrees Celsius.
Humidity 0% to 95% non-condensing
Interface 1-RS232 (DB9) Craft Port on the front,

9 DB9 connectors on the back.
Buffers 16k byte on each MUX channel.
Electrical Interface:

Common Port: RS232

Eight Channel (source) Ports: RS232
Data Rates: 300, 1200, 2400 and 9600 Baud.

All specifications are subject to change without notice.

The 8 Port Serial Switch part numbers and options are listed
below. These options are constantly expanded. As a result,
more options may be available than are listed below. Contact
your distributor for currently available options.

D-PC-186-10A-02

8 Port Serial Switch: RS 232, Connectorized,

-24VDC.

D-PC-186-10A-04

8 Port Serial Switch: RS 232, Connectorized,

-48VDC.

DPS INC

"Your Partners in Telemetry Monitoring Systems

OG119699 8 D-PC-186-10A-XV

4955 East Yale Avenue - Fresno, CA 93727 - Phone [phone] - FAX [phone]

e-mail: [e-mail]

Visit our Web site at http://www.dpstele.com

September 16, 1999