Serial Connection; Modem Connection; Functional Description; 691Ht Functional Block Diagram - ABB 691HT Operating Instructions Manual

- serial link : a RS 232 serial connection provides a
link from the Communicator and a Personal Compu-
ter. With this type of connection it is possible to use
the two devices, the Communicator and the Compu-
ter (providing a suitable software), in a perfect
symbiosis, moving data and configurations from one
device to the other and viceversa.
In particular the Communicator can be used to store
transmitter configurations received from the Computer
Software and to download it to the relevant transmitters
installed in the field.

Serial connection

DANGER - Do not use the serial connection when in
areas classified as HAZARDOUS LOCATIONS. Such
action could result in FIRE OR EXPLOSION.
The included serial cable should be used to connect the
Communicator to the PC. The cable consists of a 9 pin
male D-sub connector for attaching to the Communica-
tor and a 9 pin female D-sub connector for the PC's
serial port. Also included is a 9 pin to 25 pin serial
adapter wich can be used to adapt the 9 pin end of the
cable to a 25 pin serial port.
The figure below shows the pinout of the 9 pole sub-D
female connector of the Communicator ( view from the
rear of the equipment ).
9 6
5 1
DANGER: the serial link operation are not allowed in
hazardous area ( area with danger of fire or
explosions).
- modem : the Communicator can be connected to a
Personal Computer Configurator through the serial
link connection and connected to the transmitter,
using the Bell 202 protocol either in direct mode or in
multidrop or broadcasting mode. In the modem mode
the Communicator acts simply as a protocol converter
between the RS 232 and the Bell 202 with all
configuration functions left to the P.C.Configurator.
DISPLAY
BUS
MODEM
any point
in the loop
- 6 -
1 - N.C. ( not connected )
2 - Tx ( Transmit )
3 - Rx ( Receive )
4 - N.C.
5 - Screen
6 - N.C.
7- CTS ( Clear to send )
8 - RTS ( Ready to send )
9 - N.C.
STILO OR RECHARGEABLE
BATTERY PACK
KEYBOARD
FLASH EEPROM

691HT Functional Block Diagram

Modem connection

This connection is made to allow the connection of
transmitters, either in direct mode or multidrop or broad-
casting mode to a Personal Computer using the Com-
municator as a Bell 202 Modem.
The connection from the Communicator and the Perso-
nal Computer is of serial type and therefore make it
using the instructions for the serial link. The connection
between the Communicator and the transmitter/s should
be made using the requested type of connection (direct,
multidrop, broadcasting ).
RS-232
691HT
F1 F2 F3 F4
PV
REVIEW SERIAL
CONF
LINK
TRIM
A B C D E F G H I
1 2 3
J K L M N O P Q R
4 5 6
S T U V W X Y Z #
7 8 9
@ % & / +
0 -
Hart Mux I/F
Hart Mux I/F
To the field mounted Txs

FUNCTIONAL DESCRIPTION

The Hand Held Communicator is a microprocessor
based device using a Mitsubishi M377 microcontroller,
a random access memory ( RAM ), a read only memory
(FLASH EEPROM) used for the program, a non-
volatile RAM used to maintain the transmitters
configuration, a Bell 202 Modem, a RS 232 serial
interface, the 4 line by 20 characters liquid cristal
display and a tactile feedback membrane keyboard.
The Hand Held Communicator is powered by a pack of
stilo and rechargeable batteries. The following figure
shows a functional diagram of the Communicator.
MICROCONTROLLER
NON-VOLATILE EEPROM
P.C. Based software
Hart Mux I/F
RAM
to the P.C.
RS 232