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Operator's Manual
Read the Selected Operating Details and Cautionary Notes at the front of the Manual before using the
CR23X.
The CR23X Micrologger combines precision measurement with processing and control capability in a
single battery operated system.
Campbell Scientific, Inc. provides three documents to aid in understanding and operating the CR23X:
1.
This Overview
2.
The CR23X Operator's Manual
3.
The CR23X Prompt Sheet
This Overview introduces the concepts required to take advantage of the CR23X's capabilities. Hands-
on programming examples start in Section OV4. Working with a CR23X will help the learning process,
so don't just read the examples, turn on the CR23X and do them. If you want to start this minute, go
ahead and try the examples, then come back and read the rest of the Overview.
•
The sections of the Operator's Manual which should be read to complete a basic understanding of
the CR23X operation are the Programming Sections 1-3, the portions of the data retrieval Sections 4
and 5 appropriate to the method(s) you are using (see OV5), and Section 14 which covers
installation and maintenance.
•
Section 6 covers details of serial communications. Sections 7 and 8 contain programming
examples. Sections 9-12 have detailed descriptions of the programming instructions, and Section
13 goes into detail on the CR23X measurement procedures.
The Prompt Sheet is an abbreviated description of the programming instructions. Once familiar with the
CR23X, it is possible to program it using only the Prompt Sheet and on-line prompts as a reference,
consulting the manual if further detail is needed.
OV1. PHYSICAL DESCRIPTION
The CR23X Micrologger with the alkaline
batteries is shown in Figure OV1-1. It is
powered with 10 "D" cells and has only the
power switch on the base. The rechargeable
CR23X has rechargeable lead acid cells. In
addition to the power switch, it has a charger
input plug and an LED which lights when the
charging circuit is active. Rechargeable
CR23X MICROLOGGER OVERVIEW
CR23Xs should always be connected to a solar
panel or AC charger. The lead acid batteries
provide backup in event of a power failure but
are permanently damaged if their voltage drops
below 11.76 volts. Campbell Scientific does not
warrant batteries.
The 16 character keyboard is used to enter
programs, commands and data; these can be
viewed on the 24 character x 2 line LCD display.
OV-1
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Table of Contents
Related Manuals for Campbell CR23X
Summary of Contents for Campbell CR23X
- Page 1 Section OV4. Working with a CR23X will help the learning process, so don't just read the examples, turn on the CR23X and do them. If you want to start this minute, go ahead and try the examples, then come back and read the rest of the Overview.
- Page 2 CR23X MICROLOGGER OVERVIEW FIGURE OV1-1. CR23X Micrologger OV-2...
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Page 3: Pulse Inputs
96 Storage Module, Printer, Serial Out 97 Initiate Telecommunications 120 TGT1 GOES Satellite (CS I/O only) 121 ARGOS Satellite (CS I/O only) 122 INMARSAT-C Satellite (CS I/O only) 123 TGT1 Programming FIGURE OV1-2. CR23X Panel and Associated Programming Instructions OV-3... - Page 4 (Section 6). An optically isolated computer The terminals labeled P1, P2, P3, and P4 are RS-232 port is also provided for direct the pulse counter inputs for the CR23X. They connection to PCs and other RS-232 devices. are programmable for high frequency pulse, low...
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Page 5: Ov2. Memory And Programming Concepts
A 6 foot 9 to 9 pin serial cable and a EEPROM stores the operating system, user 9 to 25 pin adapter are included with the CR23X programs, and labels. SRAM is used for final to connect this port to a PC serial port. - Page 6 Instructions and most of the Output 1.5). Processing Instructions maintain intermediate results in Intermediate 6. Alphanumeric Labels - The CR23X can be Storage. Intermediate storage is programmed through EDLOG (PC208W automatically accessed by the instructions software) to assign alphanumeric labels to and cannot be accessed by the user.
- Page 7 Total 1152 Kbytes Total 512 Kbytes The Operating System is loaded into Flash Memory at the factory. System Operating System Memory is used while the CR23X is 32K SRAM running for calculations, buffering data (128 Kbytes) and general operating tasks.
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Page 8: Ov2.2 Program Tables, Execution Interval And Output Intervals
Subroutines, called from Tables 1 and 2, are INTERVAL AND OUTPUT INTERVALS entered in Subroutine Table 3. The size of The CR23X must be programmed before it will program memory can be fixed or automatically make any measurements. A program consists allocated by the CR23X (Section 1.5). - Page 9 Input Storage and execution interval overrun (table overrun) store the results back in Input Storage. occurs; the CR23X finishes processing the table These instructions can be used to develop and waits for the next execution interval before high level algorithms to process initiating the table.
- Page 10 CR23X MICROLOGGER OVERVIEW INPUT/OUTPUT INSTRUCTIONS Specify the conversion of a sensor signal to a data value and store it in Input Storage. Programmable entries specify: (1) the measurement type (2) the number of channels to measure (3) the input voltage range...
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Page 11: Ov3. Communicating With Cr23X
The display will turn off automatically if not OV3. COMMUNICATING WITH CR23X continuously updated. The display will stay on if The user can communicate with the CR23X through ∗ continuously updated such as occurs in the either the integral keyboard and two line LCD ∗... -
Page 12: Ov3.1.2 Key Definition
The SC12 Two Peripheral cable which comes with the SC32A is used to connect the CS I/O Back up to previous instruction in port of the CR23X to the 9 pin port of the program table or to previous Output SC32A labeled "Datalogger". Connect the Array in Final Storage "Terminal/Printer"... -
Page 13: Ov4. Programming The Cr23X
Output Flag is set must be evenly may be entered, including the mode in which divisible by the execution interval. For programs may be keyed in to the CR23X from example, with a 2 minute execution interval the computer/terminal. -
Page 14: Ov4.3 Entering A Program
16 key OV4.3 ENTERING A PROGRAM keypad. You will learn the basics of CR23X Programs are entered into the CR23X in one of operation as well as an appreciation for the help three ways: provided by the software. - Page 15 1: Panel Temperature (P17) memory memory Loc [ CR23XTemp ] When the CR23X is turned on, it tests the FLASH 2: Do (P86) memory and loads the current program to RAM. Set Output Flag High After the program compiles successfully, the CR23X begins executing the program.
- Page 16 (this is where we left off). instruction. 02:P00 This is the DO The CR23X is now programmed to read the panel instruction (a temperature every 5 seconds and place the reading Program Control in Input Storage Location 1. The program can be Instruction).
- Page 17 CR23X MICROLOGGER OVERVIEW The CR23X is now programmed to measure the Mult Offset internal temperature every 5 seconds and send each reading to Final Storage. Values in Final ∗ 3: If time is (P92) Storage can be viewed using the Mode.
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Page 18: Ov5.3 Editing An Existing Program
Instruction 96 (Sections 4.1 and 12). the TC output curve (Section 13.4). The first example described program entry one Instruction 14 directs the CR23X to make a keystroke at a time. This example does not differential TC temperature measurement. The show the "A"... -
Page 19: Sample Program
03:10 Set Output Flag 0 The CR23X is programmed to measure the thermocouple temperature every sixty seconds. The If Time instruction sets the Output Flag at the beginning of every hour. Next, the Output Instructions for time and average are added. - Page 20 CR23X MICROLOGGER OVERVIEW 03:2 Data source is Input Storage Location 2. 09: P74 Minimize instruction 01:1 One repetition 02:10 Output the time of the daily minimum in hours and minutes 03:2 Data source is Input Storage Location 2. The program to make the measurements and to send the desired data to Final Storage has been entered.
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Page 21: Ov6. Data Retrieval Options
"milked" of its data or is brought back to the They are written over by new data (Section 2.1) office/lab where the data is transferred to Memory is reallocated or the CR23X is reset the computer. In the latter case, a "fresh" (Section 1.5) - Page 22 2. THE DSP4 HEADS UP DISPLAY ALLOWS THE USER TO VIEW DATA IN INPUT STORAGE. ALSO BUFFERS FINAL STORAGE DATA AND WRITES IT TO PRINTER OR STORAGE MODULE. 3. ALL CAMPBELL SCIENTIFIC RS-232 INTERFACE PERIPHERALS HAVE A FEMALE 25 PIN RS-232 CONNECTOR. 4. THE “COMPUTER RS-232” PORT HAS A FEMALE 9 PIN CONNECTOR.
- Page 23 Encased in metal with gas discharge tubes on the ACCURACY: ±0.025% of FSR; 0° to 40°C panel, the CR23X has EMI filtering and ESD protection ±0.05% of FSR; -25° to 50°C ACCURACY: ±0.02% of FSR (±0.015%, 0° to 40°C) on all input and output connections.
- Page 24 CR23X MICROLOGGER OVERVIEW This is a blank page. OV-24...
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