background image

 

Global Water 

800-876-1172 

 globalw.com 

 

 

- 10 - 

 

VIII.

 

Modem Connection: 

 
Access to the GL500 can be made through dial-out to a remote modem by clicking 
the “Modem” option.  The connection from modem to logger requires an RS-232 

serial modem, USB modems are not supported as an interface to the logger.  Also, 
some switch settings must be made to the remote modem and an initialization string 
may be required to properly configure the host modem. 
 

Two baud rates are supported 9600 and 19200.  Should you experience difficulty 
establishing a reliable connection at 19200, use the slower connection speed.  Note 
that due to the slower baud rates and the additional handshaking performed during 
modem communication, The Global Logger software will operate significantly slower 

than during a direct connection.   
 
The Global Logger software will remember the last 4 numbers dialed and has a 
provision for using a stored text file (.txt extension) for initialization of the host 

modem using standard AT commands.  Some experience may be required to 
configure your modem but a sample command file and some useful tips follow.   
 
 

 
 
 
 

     Select 

the 

baud 

rate 

 
 
 

 
 
       Type 

in 

or 

find 

the 

phone 

number 

 

 
 
 

 

 

 

 

 

 

Use initialization file 

 

 

Select the modem’s COM port 
 

Browse 

Summary of Contents for GL500-7-2

Page 1: ...ter 800 876 1172 globalw com 1 GL500 7 2 Data Logger Global Water Instrumentation Inc 11390 Amalgam Way Gold River CA 95670 T 800 876 1172 Int l 916 638 3429 F 916 638 3270 globalw globalw com 11 30 0...

Page 2: ...l be happy to help Table of Contents I Checklist 3 II Inspection 3 III Warranty 3 IV GL500 Specification 4 V System Requirements 5 VI Software Installation 5 VII Direct Connection 8 VIII Modem Connect...

Page 3: ...ects in material and workmanship under normal use and service for a period of one year from date of shipment from factory Global Water s obligations under this warranty are limited to at Global Water...

Page 4: ...tal Inputs 2 Independent pulse counters Maximum Input Voltage 24VDC Maximum Frequency 100Hz Minimum Pulse Width 2mS Maximum Count 65 535 16 Bit Sample Now Input Sample on Demand input software enabled...

Page 5: ...r application program If you plan to use the USB port you must install the driver You may consider installing the driver now even if you plan to use the serial port USB Driver Installation With the in...

Page 6: ...are Click No not at this time when asked if Windows Update can search for software Click Next 2 Do not let Windows automatically install the software Click Install from a specific location Click Next...

Page 7: ...me to your computer 5 The first half of the installation is complete The Hardware Wizard may need to make two passes Click Finish 6 Two drivers are sometimes required so the Hardware Wizard may repeat...

Page 8: ...on Important This data logger supports an Auto Baud Rate Mode which automatically detects the communication speed However this communication software also supports loggers which may be programmed in a...

Page 9: ...ned to COM1 the port can still be used for accessing the logger but the external device must be disconnected Both the serial and USB ports can be connected to the logger at the same time but you must...

Page 10: ...culty establishing a reliable connection at 19200 use the slower connection speed Note that due to the slower baud rates and the additional handshaking performed during modem communication The Global...

Page 11: ...nd operate exactly as if a direct connection was made All options and features work the same but at a reduced communication speed When connecting the GL500 Data Logger to an external modem a special c...

Page 12: ...the power supply of 5 10mA so it is advised that if you are operating on battery power and plan not to access the logger for extended periods of time you disconnect to increase battery life Interface...

Page 13: ...urrent connection status Logger Name The logger name is a user defined name associated with a particular logger to identify one from another It is programmed in the Setup menu as described later and i...

Page 14: ...r software to take and display a single reading as well as update the rest of the fields on the screen This data reading is not stored in the historical record and does not affect the normal recording...

Page 15: ...inuously mode the display will be updated once per second and as pulses are applied to the pulse inputs the Pulse Channel fields will update the count At the end of the normal one minute sampling inte...

Page 16: ...cussion of that subject and links to related topics underlined in blue Clicking on the link will bring up a new window with specific information on that topic In this case Sensor Warm up time in the G...

Page 17: ...ginally indicated At the top of the screen is shown the name assigned to the logger and the number of recordings that have been retrieved At the bottom of the screen are three buttons Pack Save to Fil...

Page 18: ...og Digital and General The first screen to appear is General Setup At the top of the setup screen is a toolbar with three options File Action and Help File The File option allows you to exit the setup...

Page 19: ...will restore all of the analog digital and general setup information fields to default values Only the setup menus are changed the data logger must still be programmed with the new default values A wa...

Page 20: ...Rate Leave this set to Auto Baud Rate Only change this to a fixed baud rate if planning to use this logger in a telemetry application such as using Global Water s Global Access radio modem software O...

Page 21: ...esponding to 0 20mA To find the actual number of raw data units per engineering unit use the calibration numbers in the Analog Setup screen for channel 1 as follows Raw Data Units per Engineering Unit...

Page 22: ...he logger with the timers disabled will return the logger to a normal logging state Use care when programming the alarm times If left enabled changing and reprogramming any of the setup parameters wil...

Page 23: ...een Click on the field to enter the unit or select from a predefined list High EU The High EU field is the engineering unit where the highest output from the sensor is achieved during the calibration...

Page 24: ...cimal point that should appear in the historical data and in the numerical data field at the bottom of the bar graph Calibrate The Calibrate button provides a simple 4 step process for calibrating the...

Page 25: ...the example of pH enter 4 which is the lowest calibration solution to be used Click Next Place the sensor in the condition that will cause it to output the level corresponding to the low EU entered in...

Page 26: ...from a list of units predefined in the pull down menu Value for a Single Pulse The number of pulses is multiplied by this number to scale it to rainfall water flow etc If a pulse channel is connected...

Page 27: ...k to the main screen If no settings have changed Exit will occur immediately If settings have changed but not saved yet a message will appear that asks the user if they would like to save them now If...

Page 28: ...D Negative battery connection VBAT Positive battery connection Right Hand Connector V Switched sensor power CH1 Analog channel 1 input GND Sensor ground V Switched sensor power CH2 Analog channel 2 in...

Page 29: ...er 800 876 1172 globalw com 29 XVIII Modem Cable Diagrams Use the following wiring diagrams to make a cable to connect the GL500 Data Logger to an external modem Pre wired cables are available from Gl...

Page 30: ...nd recalibrate if necessary saving the setup file first as described in section XI c Check the sensor connections and clean them according to the manufacturers recommendations Issue Cannot communicate...

Page 31: ...pecific problems relating to the product Be prepared to describe the problem you are experiencing including specific details of the application installation and any additional pertinent information In...

Page 32: ...risks of electrical equipment operating within certain voltage ranges According to the following standards EN61010 1 2001 Electro Magnetic Directives 2004 108 EC Requirements to prevent electrical and...

Reviews: