Campbell Hausfeld SM4M - Manual (Page 17)

Section 2. Storing Data from Current Dataloggers
2-3
Instruction 96 can be entered two or more times in a program to sort data to
specific Storage Modules. Three important considerations are:
1. All Storage Modules to be used must be connected to the datalogger with
SC12 cables.
2. Time must be allowed between the execution of multiple instances of
Instruction 96 to Storage Modules. Add 5ms to the time it takes to store the
number of bytes to be transmitted (1ms per byte) before executing the next
Instruction 96 which addresses a different Storage Module.
3. Use of the keyboard or telecommunications during the execution of
Instruction 96 may backlog the data to be sent to the Storage Modules. In
this event, during the next execution of Instruction 96, all backlogged data
will be sent to the Storage Module addressed in that instruction.
2.1.2 Use of Two Storage Modules with the 21X or CR7
For large volumes of data, two SMs can be connected to the 21X or CR7. Use
SMS to set one SM as Fill and Stop, and the other as Ring Memory.
2.2 *8 and *9 Mode — Keyboard-Initiated Data Transfer
2.2.1 *8 Mode — CR500/510, CR23X, CR10/10X
The *8 Mode is used to manually initiate a Final Storage data transfer from the
datalogger to an external peripheral. Data transfer rate is 9600 baud. Refer to the
discussion of the *8 Mode in the datalogger Operator’s Manual for full details.
2.2.2 *9 Mode — 21X or CR7
The *9 Mode in the 21X and CR7 dataloggers is used to transfer a specified block
of data from Final Storage to the Storage Module. Consult the appropriate
datalogger manual for details.
This function is different from the *9 Mode in the CR500/510,
CR10/10X or CR23X.
2.3 Storing Burst Measurement Data from the
CR10/10X, CR23X or 21X
Burst Measurement (Instruction 23) is a special datalogger instruction used to
make fast analogue voltage measurements. Two options are available for data
retrieval with this instruction:
1.
Data is stored in the datalogger Input Storage Locations
or
2.
Raw data is output from the datalogger serial port.
In option 2, the Storage Module can capture the data at 76,800 baud. Burst data is
output by the datalogger in a unique format which includes calibration
measurements at the beginning and end of the series of measurements. Split (part
of the PC208/PC208W software packages) will translate this Burst data.
NOTE