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21

Communication with a 
CU 300 network via 
G100

The table below describes some of the most common problems when trying to estab-
lish communication between PC Tool CU 300 and the gateway G100. Parts of this 
fault finding procedure will make use of 

PC Tool G100

.

Connection to G100

Fault indication

Cause and remedy

Connection 
to service 
port

Direct
access

G100 icon is red, and the 
Status Bar reads: ’Error’.

No communication between PC and G100.
Check that...
• the cable is correct (standard 0-modem cable),
• you are using the correct COM port in your PC,
• the baud rate selection in the PC tool is 9600.

Access 
via 
modem

Modem connection cannot 
be established.

G100 modem is not properly connected to telephone line, or G100 
modem is not in auto answer mode.

• Check that the cable between G100 and modem is correct 

(standard modem cable = all pins straight through).

• To activate auto answer mode, use a terminal program (e.g. Pro-

comm) to send the following AT-command: "AT&D0".

Modem connection has 
been established but the 
G100 icon turns red and the 
Status Bar reads: 'Error'.

No communication between PC and G100. This could be due to a bad 
telephone line.
• Hang up and try again.

If this does not help, check that...

• the cable between G100 and modem is correct (standard mo-

dem cable = all pins straight through),

• the modem can work without DTR being present. Use a terminal 

program (e.g. Procomm) to send the following AT-command: 
"AT&D0".

Connection 
to R/M/P
version,
port 1

Direct
access

G100 icon is red, and the 
Status Bar reads: 'Error'.

No communication between PC and G100. Check that...
• the cable is correct (standard 0-modem cable),
• you are using the correct COM port in your PC, in the window 

File | Tool Setup | General Setup

• the baud rate selected in the window

 File | Tool Setup | Gene-

ral Setup

 matches the hardware selection on the Radio/Modem/

PLC board,

• the I/O type on the Radio/Modem/PLC board is set to 'Direct'.

Access 
via 
modem

Modem connection cannot 
be established.

G100 modem is not properly connected to the telephone line, or G100 
modem is not in auto answer mode.
• Check that the cable between G100 and modem is correct. 

Standard modem cable = all pins straight through).

If the I/O type on R/M/P board is set to 'Modem', G100 itself is able to 
initialise the modem. The initialisation string can be set up from PC 
Tool G100 in the following way:
• Connect the PC to G100 Service port and start PC Tool G100.
• Click the G100 icon.
• Select the 

[R/M/P  board...]

 button.

• Select the

 [Alarm setup...]

 button.

• In the Modem initialisation field write: ‘ATS0=1’.
• Close the menu with 

[OK]

.

• Confirm writing data to G100 with 

[Yes]

.

• Exit PC Tool G100 and switch off/on G100 to initialise modem.

Modem connection has 
been established but after a 
while the G100 icon turns 
red and the Status Bar 
shows: 'Error'

No communication between PC and G100. This could be due to a bad 
telephone line. 
Hang up and try again.

NOTE:

 After 8 hours, G100 will by itself terminate a modem communi-

cation.

Access 
via radio

The G100 icon is red and 
the Status Bar reads: 'Error'

No communication between PC and G100. Check that...
• the cable is correct (consult your radio user manual and G100 

Product Information to match the pin connections)

• you are using the correct COM port in your PC and
• the baud rate selected in the PC tool matches the dip switch se-

lection on R/M/P board and

• the I/O type on R/M/P board is set to 'Radio' ('Direct' if your ra-

dio operates in transparent mode).

(Table to be continued on the next page)

Содержание PC Tool CU 300

Страница 1: ...Installation and operating instructions GRUNDFOS INSTRUCTIONS...

Страница 2: ...2...

Страница 3: ...dows 95 98 NT ME 2000 XP Pentium 100 MHz or higher 16 Mb of RAM memory 9 Mb of hard disk space Monitor resolution 800 x 600 or higher Mouse or other pointing device RS 232 COM port Contents These Inst...

Страница 4: ...300 units or large CU 300 networks Optional connections There are three main options for connection of a PC to a CU 300 1 Using RS 232 for direct connection see fig 1 1a or connection via modem see f...

Страница 5: ...nits Use the CU 300 RS 485 bus ter minals A Y B to connect CU 300 to G100 ac cording to the wiring specification below 1 G100 Radio Modem PLC 1 standard RS 232 cable Twisted pair bus cable with screen...

Страница 6: ...y detects the presence of communication signals on the serial chan nels RS 485 or RS 232 Allow up to 40 s for communication to be established after a power up If communication is switched from one cha...

Страница 7: ...requires the Port 1 DIP switches on the R M P expansion board to be correctly set You need to dismantle the front cover The DIP switch is located at the edge of the circuit board close to the middle S...

Страница 8: ...e setup by opening the window File General Tool Setup Select the cor rect connection in the Connection type pull down menu and configure it in the corre sponding configuration tab If you are using mod...

Страница 9: ...connected units displayed as small icons This is called the Network List The Operation window below shows a situation where the Connection type is GENIbus RS 232 and there are two CU 300 units connect...

Страница 10: ...ion device is modem Note This setup is exclusively visual It does not change anything in the way the tool works the way CU 300 works the way sensors are scaled etc It is therefore possi ble to misfit...

Страница 11: ...sors connected None Modem G100 None Pressure tank Storage tank Water level Top of well pres sure Top of well flow External setpoint None Top of well flow Start stop switch Pipeline flow File Operation...

Страница 12: ...as sensor 1 In the Network List use the mouse to select which CU 300 you communicate with by clicking on its icon Once selected all data you see in the different windows belong to this CU 300 Selecti...

Страница 13: ...osen to be off then a dash is shown in the corresponding sensor window The accuracy of a sensor input is 2 The CU 300 Panel window You open this window by clicking on the upper left corner of the CU 3...

Страница 14: ...will give an explanation to the alarm its possible cause and remedy The Alarm Log cannot be cleared The CU 300 Unit Information window Open this window by selecting Status CU 300 Unit Information or...

Страница 15: ...eous Control mode Open Loop Closed loop Open loop Open loop Setpoint is the pump speed Closed loop CU 300 closed loop control tries to bring the feedback sensor 1 in accordance with the setpoint Butto...

Страница 16: ...stops at low limit Sensor 2 External setpoint Enable Disable Disable Sensor signal used as external analogue setpoint Signal type No sensor 0 20 mA 4 20 mA 0 10 V 2 10 V SPP 1 No sensor Type of electr...

Страница 17: ...e parts are equal to the contents of settings from the Operation window and the three configuration windows Select the parts you would like to program and click Program You can also do the opposite sa...

Страница 18: ...nection on the included CU 300 RS 232 cable is marked black Check for short circuits at the connections Check that the cable is not damaged and that cable con nections if any are sound Check that the...

Страница 19: ...amaged and that cable con nections if any are sound Check that the cable has been made according to the de scription see Wiring specification for the different cable connections page 5 PC Connection C...

Страница 20: ...bus cable must be connected to the right terminals on the CU 300 unit The signal wires to A and B and the screen to Y Check that the connection to A and B are not reversed Check for short circuits at...

Страница 21: ...g the correct COM port in your PC in the window File Tool Setup General Setup the baud rate selected in the window File Tool Setup Gene ral Setup matches the hardware selection on the Radio Modem PLC...

Страница 22: ...he following AT command ATSO 1 Modem connection has been established but the G100 icon turns red and the Status Bar reads Error No communication between PC and G100 This could be due to a bad telephon...

Страница 23: ...Truccazzano Milano Tel 39 02 95838112 95838212 Telefax 39 02 95309290 95838461 Japan GRUNDFOS Pumps K K 1 2 3 Shin Miyakoda Hamamatsu City Shizuoka pref 431 21 Phone 81 53 428 4760 Telefax 81 53 484 1...

Страница 24: ...96 43 28 77 0802 GB Repl V7 15 79 55 0200 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence...

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