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CET s.r.l. Parallel Message Display

page 16

3.2. SERIAL LINE

All models are equipped with a RS232 serial line with fixed protocol:

1 START Bit, 8 DATA Bits, Parity NONE, 2 STOP Bits with transmission speed of 19200 BAUD (except

transmission to printer which is executed at a speed of 1200 BAUD).

The physical connection is carried out using a 9-pole female cup connector as shown in the figure:

The following functions can be performed through the serial line:

•

PROGRAMME RECEPTION FROM PC

•

COMMAND RECEPTION

•

PROGRAMME TRANSMISSION TO PC

•

PROGRAMME TRANSMISSION TO ANOTHER MESSAGE DISPLAY UNIT

•

TRANSMISSION TO PRINTER

Using the appropriate SERVICE commands, it is possible to control the PRINTER ST 40 directly to obtain printer

listings of the messages displayed.

The message display units can also be totally managed (controlled) through serial line commands instead of

parallel inputs.

3.2.1. Serial line commands

The serial line command generator device (PC or PLC LOGIC UNIT) should make a 2-byte string of data using

the chart of commands for commands TYPE 0 - 1 - 2 - 3 - 4 - 5 - 6 -10 - 11 - 12 -13 and 14.

Composition of 1

string byte:

START BIT

2 STOP BITS

BIT

0 PARITY

NONE

The sequence of the bytes transmitted reflects exactly the same sequence as parallel commands.

Composition of the 2

string byte:

START BIT

2 STOP BITS

BIT

D6 D7 PARITY

NONE

The two bytes must be transmitted consecutively with a maximum delay of 3 seconds from one another.

The sequence of the bytes transmitted reflects exactly the same sequence as parallel commands.

8 7 6 5 4 3 2 1

PRG

GND

Summary of Contents for Message Dispay AMF401

Page 1: ...ERIES AMF401 AMF402 BMF202 EMC202 EMC402 EMF202 EMF402 FMC202 Version 1 2 s r l Strada Statale 211 Km 53 550 28071 Borgolavezzaro NO Tel 39 0321 885180 885301 885807 Fax 39 0321 885560 http www cet italy it e mail info cet italy it ...

Page 2: ...nd TYPE 7 Manual operation and associated commands 11 2 5 2 Command TYPE 10 Message Print 12 2 5 3 Command TYPE 12 Display flashing mode 12 2 5 4 Command TYPE 14 System language selection Message bank selection 12 3 TECHNICAL DESCRIPTION 14 3 1 INPUTS 14 3 1 1 Using inputs in POSITIVE logic 14 3 1 2 Using inputs in NEGATIVE logic 15 3 1 3 Input command timing 15 3 2 SERIAL LINE 16 3 2 1 Serial lin...

Page 3: ...tting at work operations with directs display of internal data variables if any information concerning maintenance operations troubleshooting sequence sequence information in different languages 1 1 GENERAL DESCRIPTION OF THE DIFFERENT MODELS This manual refers to the following models FMC202 EMC202 EMC402 EMF202 EMF402 AMF401 AMF402 BMF202 The message display units mentioned above differ only as r...

Page 4: ...h high brilliance 1 1 7 AMF 402 SERIES A container front 72 x 288 fluorescent display with 2 lines each of 40 characters 80 characters in all 5 mm character height with high brilliance 1 1 8 BMF 202 SERIES B container front 96 x 288 fluorescent display with 2 lines each of 20 characters 40 characters in all 11 mm character height with high brilliance 1 2 MAIN FEATURES VISUALISATION ON A ALPHANUMER...

Page 5: ...d contrast MESSAGE NUMBER CAPACITY All devices have a maximum capacity of 512 messages NUMBER OF VARIABLES THAT CAN BE ENTERED with external commands as many characters as the display length INPUTS PRI input for POSITIVE LOGIC or NEGATIVE LOGIC programming 14 DATA inputs for different functions see chart INPUT SIGNAL LEVEL Positive logic 0 0 Vdc to 6 Vdc 1 10 5 Vdc to 30 Vdc Negative logic 0 OFF f...

Page 6: ...o the display and replaces the previous one or it is possible to manage the 9 data inputs D0 to D8 as independent inputs for contacts by sending the appropriate sequence commands through the PLC it is possible to manage and update directly all or part of determined text areas in the message being displayed by entering the characters required ASCII or BCD In this way you can complete the texts with...

Page 7: ...ands TYPE 8 1 0 1 1 1 Direct Binary message recall TYPE 9 IMP 1 0 0 0 Not active TYPE 10 IMP 1 0 0 1 Displayed message print enabling TYPE 11 IMP 1 0 1 0 Binary sub message recall TYPE 12 IMP 1 1 0 0 Message flashing mode enabling TYPE 13 IMP 1 0 1 1 BCD sub message recall TYPE 14 IMP 1 1 0 1 System language change Bank selection Each command is stored upon the variation from 0 to 1 of SY excludin...

Page 8: ... D0 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 3 rd 2 nd 1 st 3 rd DIGIT 2 nd DIGIT 1 st DIGIT Number in the range 0 to 199 Coding and number are always read at the variation 0 1 of synchronism signal SY in case of recall using a command type 1 BCD up to 199 messages can be recalled 2 3 3 Command TYPE 6 Message recall through independent inputs Inputs SY D C B A Command TYPE 6 IMP 0 1 1 0 This coding req...

Page 9: ... as such number is sent to the input With this configuration you cannot use any of the commands of TYPES 0 to 7 2 3 5 Command TYPE 11 Sub message display in BINARY code Using this command you can recall a message to the second display line together with the message that is already displayed at the moment This enables two different messages being displayed at the same time Should one or both messag...

Page 10: ...a word sentence or number such writings are called VARIABLES as they are continuously varied updated Management and consequently entering of such VARIABLES in the message display unit is rather sophisticated in order to guarantee the PLC easy and efficient display control First of all it is necessary to identify in advance the positions in the text where the variables are to be entered and leave t...

Page 11: ...GIT 2 nd DIGIT 1 st DIGIT Number in the range 0 to 199 2 4 2 Command TYPE 4 Address in BINARY code Inputs SY D C B A Command TYPE 4 IMP 0 1 0 0 This code informs the display unit that the first 8 inputs represent the position address 0 to 80 in BINARY code where the next variable will be laid D8 D7 D6 D5 D4 D3 D2 D1 D0 2 6 2 5 2 4 2 3 2 2 2 1 2 0 Number in BINARY code in the range 0 to 80 Coding a...

Page 12: ...osition to lay the variable In this case the actual cursor stays in its initial position and increases by 1 relative to that position 2 4 4 Command TYPE 5 Variable in ASCII code Inputs SY D C B A Command TYPE 5 IMP 0 1 0 1 This coding identifies the presence of a variable ASCII coded character in the first 9 inputs D8 D7 D6 D5 D4 D3 D2 D1 D0 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 ASCII character in t...

Page 13: ...message being displayed through the serial line Inputs SY D C B A Command TYPE 10 IMP 1 0 0 1 Coding and number are always read at the 0 1 variation of the synchronism signal SY 2 5 3 Command TYPE 12 Display flashing mode Using this command you can cause the message shown on the display to flash This is a Set Reset type command i e the first time the input is activated the flashing mode is also ac...

Page 14: ... you are to work with The bank number is created during programming using the WINTEXT software package Desks can be selected as follows D0 BANK 1 D1 BANK 2 D2 BANK 3 D3 BANK 4 The next 5 bits D4 to D8 select the system message language you are to work with in the following order D4 ITA ITALIAN D5 GB ENGLISH D6 DE GERMAN D7 SPA SPANISH D8 FRA FRENCH Upon power up if no bits are set the instrument r...

Page 15: ...ITIVE LOGIC by programming the PRI input to EARTH or NEGATIVE LOGIC with PRI at 24Vdc The inputs must be connected as shown in the figure according to the type of logic used POSITIVE or NEGATIVE 3 1 1 Using inputs in POSITIVE logic PRI 24 GND PRI 24 GND 9 A B D0 Dn C PNP E GND EARTH EXTERNAL POWER UNIT GND 24Vdc C Collector E Emitter DISPLAY UNIT C PNP E C PNP E C PNP E ...

Page 16: ...0 to 1 of the synchronism signal SY should respect the following minimum time conditions For fast VARIABLE updating from the PLC we recommend using the following sequence type T1 T3 T2 T1 T3 T1 minimum 1 millisecond T2 minimum 3 milliseconds T3 minimum 3 milliseconds CODED INPUTS SY 9 A B D0 Dn C NPN E GND EARTH C Collector E Emitter DISPLAY UNIT LOGIC UNIT C NPN E C NPN E C NPN E FIRST VARIABLE S...

Page 17: ...essages displayed The message display units can also be totally managed controlled through serial line commands instead of parallel inputs 3 2 1 Serial line commands The serial line command generator device PC or PLC LOGIC UNIT should make a 2 byte string of data using the chart of commands for commands TYPE 0 1 2 3 4 5 6 10 11 12 13 and 14 Composition of 1 st string byte START BIT 2 STOP BITS BIT...

Page 18: ...i e have the same grounding reference for the display unit this is the external power unit since potential differences damage the serial ports 4 2 PROGRAMMED MEMORY ARCHIVES All text programmes resident in the display units can be resent to a personal computer fitted with the WINTEXT software to be filed or changed To execute programme transfer the serial lines of the personal computer and message...

Page 19: ... 5 1 1 Technical features POWER SUPPLY 24 110 220 Vac 10 15 FREQUENCY 50 60 Hz ABSORPTION 6VA OPERATING TEMPERATURE 0 C 50 C AMBIENT CONDITIONS R H 95 at 40 C without condensate RELIABILITY MCBF 500 000 lines INK RIBBON cartridge type RIBBON CAPACITY 200 000 characters PAPER FEATURES width 69 5 0 5 mm thickness 0 07mm max roll diameter 50 mm PAPER FORWARD SPEED 0 4 lines sec WRITING SPEED 0 4 line...

Page 20: ...e written paper roll 2 bring paper from the new roll to the printing mechanism opening 3 press the paper feed button until paper comes out of the printing mechanism 4 insert the new roll in its compartment and close the panel The printer ST40 prints on standard paper easy to find on the market Paper specifications are listed in the chapter TECHNICAL FEATURES It is also possible to order paper from...

Page 21: ...ions and terminals for EMC202 EMC402 EMF202 EMF402 BMF202 PRI POSITIVE GND LOGIC 7 8 1 2 3 4 5 6 7 8 A B C D S D D D Y 0 1 2 1 2 3 4 5 6 7 8 9 D D D D D D P 24 VDC 3 4 5 6 7 8 R GND I CN3 CN2 CN1 PRI NEGATIVE 24 LOGIC 7 9 PRI POSITIVE GND LOGIC 7 8 PRI NEGATIVE 24 LOGIC 7 9 D D D S D C B A 2 1 0 Y 8 7 6 5 4 3 2 1 24 VDC P D D D D D D GND R 8 7 6 5 4 3 I 9 8 7 6 5 4 3 2 1 CN1 CN2 CN3 ...

Page 22: ... 6 2 1 Overall dimensions for FMC202 6 2 2 Overall dimensions for EMC202 EMC402 EMF202 EMF402 139 45 10 MAX 43 65 15 9 89 144 48 PROBE ALARM BLOCK 15 MESSAGE DISPLAY 188 69 10 MAX 67 56 15 7 78 192 72 PRESSURE SWITCH NO 21 ALARM TURN OFF LOWER BOILER MESSAGE DISPLAY ...

Page 23: ... 22 6 2 3 Overall dimensions for AMF401 AMF402 6 2 4 Overall dimensions for BMF202 282 69 10 MAX 67 65 15 10 90 288 72 ALARM AT SECTION 18 INSTALLATIONS MESSAGE DISPLAY 282 97 10 MAX 95 50 15 10 75 288 96 PROBE ALARM BLOCK 15 MESSAGE DISPLAY ...

Page 24: ...CET s r l Parallel Message Display page 23 6 2 5 Overall dimensions for printer ST40 1 144 144 139 139 10 MAX 138 144 20 32 196 Removable terminal board Fixation squares ...

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