Cole Parmer 74900-20 User manual

Dual & Multiple
Syringe Infusion Pump
Users Manual
Publication 5607-012-REV-

EU Directives WEEE and RoHS
To Our Valued Customers:
We are committed to being a good corporate citizen. As part of that commitment,
we strive to maintain an environmentally conscious manufacturing operation. The
European Union (EU) has enacted two Directives, the first on product recycling
(Waste Electrical and Electronic Equipment, WEEE) and the second limiting the use
of certain substances (Restriction on the use of Hazardous Substances, RoHS).
Over time, these Directives will be implemented in the national laws of each EU
Member State.
Once the final national regulations have been put into place, recycling will be offered
for our products which are within the scope of the WEEE Directive. Products falling
under the scope of the WEEE Directive available for sale after August 13, 2005 will
be identified with a “wheelie bin” symbol.
Two Categories of products covered by the WEEE Directive are currently exempt
from the RoHS Directive – Category 8, medical devices (with the exception of
implanted or infected products) and Category 9, monitoring and control instruments.
Most of our products fall into either Category 8 or 9 and are currently exempt from
the RoHS Directive. We will continue to monitor the application of the RoHS
Directive to its products and will comply with any changes as they apply.
• Do Not Dispose Product with Municipal Waste
• Special Collection/Disposal Required
WEEE/RoHS Compliance Statement

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Cole- armer®Dual & Multiple Syringe ump
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Contents
Specifications..........................................................................................................................3
General Safety Summary......................................................................................................4
General Description ..............................................................................................................5
Features ................................................................................................................................5-7
Operating Instructions
Power Switch ............................................................................................................8
Syringe Loading........................................................................................................8
Withdrawal Operation ............................................................................................8
Push/Pull Syringe Pump ..........................................................................................9
Menu Features ........................................................................................................10
Keypad Functions....................................................................................................10
Fast Forward, Fast Reverse ....................................................................................10
Syringe Diameter Entry ..........................................................................................11
Volume Setting ........................................................................................................11
Units Setting ............................................................................................................12
Rate Setting..............................................................................................................12
Power Interruption (power up) ..............................................................................12
Run/Stop ................................................................................................................12
Change or Review Volume Setting While Running ............................................13
Mode Selection ......................................................................................................13
Infusion
Withdrawal
Infusion/Withdrawal
Withdrawal/Infusion
Continuous
Manual Stall Setting and Microliter Syringes ....................................................14
Glass Syringes ........................................................................................................14
Clearing a Stall Condition ....................................................................................15
NV Ram Failure ......................................................................................................15
RS232 Connections................................................................................................16
RS232C Commands ........................................................................................16-19
RS232 Format ........................................................................................................19
Programmable Option
General Information ..............................................................................................20
Features....................................................................................................................21
Menu Operation ..............................................................................................22-24
Running the Program..............................................................................................25
Commands and Responses ............................................................................26-29
RS232 Commands ..............................................................................................................30
TTL Specifications ................................................................................................................31

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Fuses ......................................................................................................................................31
Maintenance ........................................................................................................................32
Standard Table of Syringe Diameters ..............................................................................33
Japanese Table of Syringe Diameters ..............................................................................34
Standard Minimum and Maximum Flowrates..................................................................35
Japanese Minimum and Maximum Flowrates ................................................................36
Limited Warranty..................................................................................................................37
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Specifications
Model Dual Infusion Pump
Syringe size 10 microliter to 140 milliliter
Electrical Rating US model 115 V~, 0.25 A
CE model 230 V~, 0.16 A
Fuse 5 x 20 mm, 250 V~, Slow low, 0.25 A
Voltage operating range US model 110-120 V~, 50/60 Hz
CE model 200-240 V~, 50/60 Hz
Drive mechanism Microprocessor controlled stepper motor
1/2 - 1/16 microstepping, driving a leadscrew
through a belt and pulley drive mechanism
Pusher advance per microstep (1/16 step) - 0.165 micron (or .0000064 inch)
Volume per microstep (1/16) with 60ml D syringe - 0.0919µl
Max stepping rate 1600 (1/2 step) /sec
Min step rate 1 (1/16 step) /120 secs
Linear Travel Rate Min: 4.95 x10-4 cm/hr
Max: 12.67 cm/min
Flowrate range 2.757 µl/hr to 70.56 ml/min (60 ml syringe)
Nominal linear force 40 lb
Dimensions 11x9x5.5 inch (28x23.5x14 cm)
Weight 9 lb (4 kilo)
Atmospheric Specifications
Temperature 5˚C - 40˚C (41˚F - 104˚F)
Humidity 20% - 80% RH
Mode of Operation Continuous
Classification Class I
Pollution Degree 2
Installation Category II
Output N/A
Physiological Effects N/A
Cooling Conditions No special considerations
Mechanical Stability No special considerations
Protective Packaging No special considerations
Earth Terminals No External connections required
Removable Protective Means N/A
Supplier Name Cole-Parmer®Instrument Company
Address 625 East unker Court
Vernon Hills, Illinoius 60061-1844
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General Safety Summary
Please read the following safety precautions to ensure proper use of your syringe pump.
To avoid potential hazards and product damage, use this product only as instructed in this
manual. If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
To revent Hazard or Injury:
USE PROPER POWER SUPPLY
The pump is supplied with an approved power supply and line cord.
USE PROPER LINE CORD
Use only the line cord shipped with the product and make sure line cord is certified for coun-
try of use.
GROUND PRODUCT
This product is grounded through the grounding conductor of the power cord. To avoid electric
shock, use only approved line cord with the product and insure it is connected to earth ground.
MAKE PROPER CONNECTIONS
Make sure all conections are made properly and securely.
ORIENT EQUIPMENT PROPERLY
Do not position the equipment such that it is difficult to reach the disconnecting device.
OBSERVE ALL TERMINAL RATINGS
Review the operating manual to learn the ratings on all connections.
AVOID EXPOSED CIRCUITRY
Do not touch any electric circuitry inside the product.
DO NOT OPERATE WIT SUSPECTED FAILURES
If damage is suspected on or to the product do not operate the product. Contact qualified
service personnel to perform inspection.
AVOID PINC AZARD
A pinch hazard may exist between the Pusher lock and End locks. Avoid placing fingers
between these points while the pump is running.
OBSERVE ALL WARNING LABELS ON PRODUCT
Read all labels on product to ensure proper usage.
CAUTION
This pump is not registered with the FDA and is not for clinical use
on human or veterinary patients. It is intended for research use only.
Protective Ground
Terminal
CAUTION
Refer to Manual
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General Description
Operation of the pumps is simplified by using a keypad to select features from a menu on the
alphanumeric display.
All control functions are performed automatically by the pump microcontroller and are based
on the syringe diameter and linear motion of the pusher block to deliver a known volume.
After entering the syringe diameter, either directly or from a table in memory, a dispense
volume and flow rate can be entered, and then all calibration and control functions are
performed by the pump automatically.
model number syringes infusion withdrawal push/pull
74900-10 2x
74900-20 2xx
74900-30 10 x
74900-40 10 xx
74900-70 4x
74902-60 4x
74901-50 4x
Features
1) Syringe identification
Look up Table
The pump contains a table of standard syringes arranged by manufacturer, material
and size. Once the syringe is identified in the table the pump automatically enters the
appropriate diameter.
Direct Entry
If the syringe used is not included in the table, the internal diameter of the syringe
barrel can be measured in millimeters and entered directly from the keypad.
2) INFUSION AND REFILL RATES
The infusion rate and, where applicable, the withdrawal rate can be set independently
and can be changed while the pump is running. After the operating mode selection is
made the program will prompt only for the relevant rates associated with that mode.
3) VOLUME
A target volume can be entered for infusion and refill independently, and the pump
automatically stops when this volume is reached. The pump displays an initial volume of
zero and increases as the dispense proceeds to the target volume. The target volume
can be reviewed or changed as the pump continues to operate.
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Features (continued)
4) MODES OF OPERATION
Infusion
Rate and volume settings: pump infuses to the set volume and stops.
Rate setting only: pump runs until manually stopped or stalls.
Withdrawal
Rate and volume settings similar to above.
Infusion/withdrawal
Infusion automatically followed by withdrawal. Rate and volume settings can be made
independently for infusion and withdrawal, hence the pump can infuse at one rate and
volume and then change to a different withdrawal flowrate and volume setting.
Withdrawal/infusion
Withdrawal immediately followed by infusion. Separate settings for rate and volume
can be made for withdrawal and infusion.
Continuous operation
The pump cycles from infusion to withdrawal continuously. The volume is identical in
infuse and withdrawal directions.
Note: The displayed menu which prompts the operator for Rate and Volume settings
changes with Mode selection. For convenience, only the relevant settings associated
with the selected mode are prompted. For example, in the Withdrawal / Infusion mode
the menu prompts for withdraw and then infuse volumes, followed by withdraw and
infuse rates. In Infusion only mode, the menu prompts only for infusion volume and infu-
sion rate. In the Continuous mode only one volume is prompted for followed by infusion
and withdrawal flow rates.
5) RS232C INTERFACE
Multiple pumps can be controlled in a “daisy chain” by a single PC.
Programming is reduced to a small number of simple commands.
6) TTL
Input and output controls are available, such as, direction change, run indicator,
footswitch or timer control , and valve or relay actuation.
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Features (continued)
7) STALL DETECTION
The motor is monitored by an optical encoder to confirm the programmed movement. If
the back pressure increases due to jamming or flow restriction then the motor may stall.
Stall detection by the encoder results in a pump shutdown.
The display will read “Stalled”. The Stall message can be cleared with the Select key.
8) POWER DISRUPTION
When power is returned after a temporary power disruption the pump can be pro-
grammed to resume operation or remain stopped.
However, if a dispense volume is set then the pump always remains stopped.
9) NON-VOLATILE MEMORY
All operational settings are stored in non-volatile memory for convenience, and are
used to set the pump when first switched on.
10) SELECTION OF RATE AND VOLUME UNITS
Units of volume (µl or ml) and flowrate (µl/ml per min/hr) can be changed if required.
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To simplify syringe loading, the pusher block can be disengaged from the leadscrew by turn-
ing the knob(1) and manually moved along the guide rods. Alternately, the Fast forward,
Fast reverse feature can be used (press Run and respective Arrow key simultaneously).
Knob (1) is rotated to release the drive nut from the leadscrew. When the white line on the
knob is facing toward the syringe barrel the drive nut is engaged and when the white line
faces the keypad the nut is disengaged.
Raise and rotate the spring loaded retaining arm (2) and place the syringe barrel in the “V”
of the syringe holder. With the syringe in place release the retaining arm so that it clamps
down on the barrel and holds it securely in place.
Release the pusher block mechanism and slide the block along the guide rods until the block
presses firmly against the syringe plunger. Rotate the knob (1) to re-engage the drive nut.
MODEL 210 AND MODEL 230 WIT DRAWAL OPERATION
For withdrawal, or refill operation, the syringe plunger and barrel flange must be secured by
additional brackets.
Loosen screws (3) on the syringe holder and, after loading the syringe, press the retaining
bracket against the barrel flange to secure the flange between the bracket and syringe
holder. Tighten screws (3).
To restrain the plunger, rotate knob (4) to release the retaining bracket and position the
syringe plunger between the pusher block and retaining bracket. Turn knob (4) clockwise to
tighten the retaining bracket and then re-engage the drive nut knob (1).
The mechanism is designed to accommodate a wide range of syringe sizes however, there
are some syringes which require additional attention. (See page 14)
Operating Instructions
POWER SWITC
The power switch is located on the right corner of the rear panel.
SYRINGE LOADING
(4) Anti-syphon knob (1) Drive nut knob
Anti-syphon bracket (3) Withdraw screw
(2) Syrin e clamp
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Operating Instructions (Continued)
MODEL 74902-60 PUS -PULL SYRINGE PUMP
Travel direction
Pusher blockSyrin e clamp
Syrin e rest Anti-syphon clamp Withdraw bracket
Push-Pull operation: Operate in Withdraw Mode.
Large volume dispenses using large syringes may not require the use of the syringe rest.
Increase travel is possible if the infusion syringe is retained in the left syringe holder without
use of the syringe rest.
Model 74902-60 has all the features of a Model 74900-20 and, for the push-pull operation
the Withdrawal Mode should be selected from the menu. In this mode the pusher block will
travel from right to left, as shown above.
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Operating Instructions (Continued)
MENU FEATURES
When the pump is first turned on the LCD will display the last Rate or Volume setting. Pressing
Select repeatedly will always return the display to the main menu.
The main menu consists of seven variables, three of which are displayed at all times. The cen-
ter variable pulses to indicate that this option can be reviewed or changed.
The menu acts as a continuous loop and the arrow keys, are used to move
around the loop. Press the Select key to select the variable to be changed.
DIA TA LE RATE VOL MODE
RS232C PWR UP
KEYPAD FUNCTIONS
A keypad is used for selection of features from the displayed menu and numerical entries.
KEYPAD
These keys move the displayed menu left and right respectively.
select Used to select the highlighted menu feature (flashing).
enter The numerical parameters of the feature selected are set, then enter
places all the settings in memory ready for operation. All settings are
stored in non-volatile memory and will be used next time the pump
is operated.
0 - 9, . Numerical and decimal entry keys.
run/stop Starts and stops the motor. Acts as a pause during a dispense.
FAST FORWARD, FAST REVERSE
Keys run and or pressed simultaneously causes the pump to run at maximum speed.
This feature can be used for loading, purging and reversing out of a stall condition.
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Operating Instructions (Continued)
SYRINGE DIAMETER ENTRY
The pump must be calibrated by identifying the internal diameter of the syringe used.
Once entered this data is stored in non-volatile memory and need be modified only when a
different syringe is used.
Table
Use the arrow keys to move TA LE to the center of the display and press select
to select this feature. The display now reads abbreviated names of syringe
manufacturers and the type of syringe (plastic or glass).
Use the arrow and select keys to scroll through the list and select the manufacturers’
name of the syringe used.
The display now lists the size of syringe. Again, use the arrow and select keys to
identify and enter the syringe used.
Diameter
If the syringe used is not listed in the table of syringes then the internal diameter of the
syringe must be measured and entered directly.
Scroll through the main menu and select DIA.
The display now prompts for entry of the syringe barrel internal diameter measured in
millimeters. Enter by using the numerical keys and enter.
Note: If the diameter is changed the volume and rate settings are set to zero.
VOLUME SETTING
Volume can be reached directly from the main menu or will be prompted after mode selection.
Volume prompt: Vol.: 00.00ml >
1) Enter target volume from the numerical keypad.
2) If the units and value displayed are correct, enter.
The underlined display, or pulsing display segment, indicates that this parameter can be
changed. The arrow symbol signifies direction of travel (< indicates withdrawal ) and pulses
when the pump is running.
Note: When dispensing, the displayed volume increments in units of the last significant
figure of the volume entered. Therefore, to increment by .01 the volume should be set at
1.00. If the volume is set at 1.000 then the volume increments in units .001.
Note: Volume setting = 0.0
a) Infusion or Withdrawal modes.
Volume = 0 is interpreted as no volume and the pump will run until manually
stopped or a stall occurs. The LCD will display the rate setting.
b) Infusion/withdrawal, Withdrawal/infusion and Continuous modes.
A volume setting must be entered. If no volume is entered the display returns to
the mode selection menu to select the appropriate mode.
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Operating Instructions (Continued)
UNITS SETTING
prompt: Vol.: 00.00 ml <
The units displayed can be changed if required.
1) Use the RIGHT arrow key to move the pulsing indicator to the units displayed.
2) Continue to use the RIGHT arrow key to scroll through the possible units.
3) The LEFT arrow key will move the active display back to the numerical value.
4) When the correct value and units are displayed press enter.
Possible units are:
– µl and ml
– microliter and milliliter
– µl/m, µl/h and ml/m, ml/h
– µl or ml per minute or hour
RATE SETTING
Display reads: Rate 00.01 ml/h >
1) Enter the flowrate value required with the numerical keypad
2) If necessary, change the units using the key to move to and scroll
through the possible units.
3) When the displayed settings are correct press enter.
Note: If the number entered exceeds the maximum flow rate possible then the pump
displays the maximum feasible rate. To continue enter a rate smaller than the maximum.
Note: To check the maximum possible rate enter 9's to the required decimal position.
For example, enter 99.9 and the maximum displayed is 12.3 whereas, if 99.99 is
entered, then the maximum displayed is 12.34.
POWER UP run or stop
This option is only applicable when no dispense volume is selected. When power returns
after an interruption the pump can resume operation (select RUN ) or remain stopped
(select STOP ).
If the pump resumes operation the rate display will flash to indicate that a power
interruption has occurred. Press select to clear the display to resume normal
operation.
RUN/STOP
After all settings are made the pump can be started or stopped by a single press of the
run/stop key. During a volume dispense the stop acts as a “pause” and run will resume the
dispense.
➔
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Operating Instructions (Continued)
C ANGE OR REVIEW VOLUME SETTING W ILE RUNNING
While the pump continues to run press select to return to the main menu. Scroll through the
menu and select Volume to display the set dispense volume.
a) No volume change
Press select. The display returns to the incrementing display volume.
b) Volume change
1) Make the changes with the numerical keypad and enter.
2) The display moves to RATE, permitting a change if required. Use the numerical
keypad and enter to make changes (or leave unchanged). The pump
immediately changes to the new flowrate, if changed, and the volume
continues to increment, uninterrupted by the review process, to new target
dispense volume when it will stop automatically.
Note: If the volume is changed to a volume smaller than the volume already accumu-
lated then the pump will stop as soon as the new, smaller target volume is entered.
MODE SELECTION
Mode selection is available only on infusion/withdrawal models.
Select MODE from the main menu and then scroll through the options displayed and select
the mode required.
Possible modes are: infusion, withdrawal, infusion / withdrawal,
withdrawal / infusion, continuous
Note: for bi-directional modes a volume is required.
infusion
Pump infuses at the set rate and stops automatically when the target volume is reached.
The pump can be manually stopped and restarted at any time, that is, the dispense is
paused and, when restarted will continue to the set dispense volume.
withdrawal
Pump withdraws at the set rate to the set volume.
infusion / withdrawal
The pump first infuses and when the target volume is reached it immediately changes
direction and withdraws. The volume settings for infusion and withdrawal can be differ-
ent, as can the infusion and withdrawal flow rates.
withdrawal / infusion
The pump runs first in the withdrawal direction and then automatically changes to the infu-
sion direction. Different settings of rate and volume for withdraw and infuse are permitted.
continuous
The pump first infuses and then withdraws, and then cycles continuously. Only one vol-
ume setting for infusion and withdrawal is permitted. If the pump is matched to a valve,
which is actuated by a TTL pulse from the pump, this mode can be used to infuse and
then refill the pump for continuous operation.
The menu now prompts for volume and rate settings relevant to the mode selected.
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Operating Instructions (Continued)
MANUAL STALL SETTING AND MICROLITER SYRINGES
A movable collar, located on the rear guide rod of infusion only pumps, can be set to limit
travel of the pusher block. The block moves until stalled against the collar when the electro-
optical sensor detects the stall and stops the pump.
Damage to the fine wire plungers of microliter syringes caused by forcing the plunger into
the end of the syringe barrel can be prevented by careful adjustment of the collar position.
GLASS SYRINGES
In the withdrawal mode the retaining bracket on the pusher block clamps on the head of the
plunger. With some glass syringes the corners of the plunger head are rounded and this may
cause the head to ride up out of the retaining bracket.
Similarly in the infusion mode the rounded corners of the syringe barrel flange cause a
tendency for the syringe barrel to ride up out of the syringe holder.
To give a more secure, flatter surface to clamp against, an O-ring or metal collar can be
placed over the barrel and pressed against the flange.
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Operating Instructions (Continued)
CLEARING A STALL CONDITION
Should a stall occur the pump motor is stopped to prevent damage.
To clear the display press select.
To move the stalled mechanism use the fast forward or fast reverse to move the pusher
block. Using the fast forward or fast reverse feature is not only the most simple way to deal
with the stall, it also reduces potential damage to the cam mechanism which releases the
halfnut from the leadscrew.
NV Ram Failure
If the settings in the non-volatile memory become corrupted the display will read “NV Ram
Failure” and the pump will not operate.
To recover from this condition the pump must be powered down and then turned on again
after a few seconds delay. The pump will be re-initialized to the default settings and can now
be programmed as normal.
If the above fails to work the “NV Ram Failure” message can also be cleared by pressing
select and programming a new flow rate. The pump should then be turned off and on to
save the settings.
RS232 Setup
The RS232 connections are made through two modular telephone connectors, labeled IN
and OUT , located on the rear panel.
A single PC can control up to 100 pumps via a “daisy chain” using the IN and OUT
connectors. When using the daisy chain each pump must be assigned an address and set to
the same baud rate. A splitter may be required with greater than 50 pumps.
When controlled via RS232 the pump will still respond to keypad commands but will not
respond to keypad and RS232 commands simultaneously. All RS232 command settings,
similar to keypad settings, are stored in non-volatile memory.
Select RS232 from the main menu.
Baud Rate 300, 1200, 2400, 4800, 9600
The available baud rates will now be displayed and can be selected
using the arrow and select keys.
The display now prompts for assignment of a pump address.
Address
If, no address is assigned then the pump defaults to a 0 setting.
All pumps with the same address respond simultaneously to the same
commands.
Use the key to enter an address, 0 - 99 and press select to return
to the main menu.
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Operating Instructions (Continued)
RS232 COMMANDS
RS232 is used for remote computer control of up to 100 pumps, identified with an address
from 0 to 99 and set to the correct baud rate. Each pump can be controlled either from the
keypad or via RS232 at all times, but the pump can only respond to one command at a
time. When under RS232 control the display reads “REMOTE”. All settings made via RS232
are stored in non-volatile memory.
To move the pump from Remote (RS232) to keypad control press select.
After each command is received and executed by the pump the pump responds with a mes-
sage and a prompt.
Commands and Responses
Commands are not case sensitive.
After each command is received and executed the pump responds with prompt sequence:
abbreviations:
<CR> = carriage return
<LF> = line feed
<SP> = space
<NSP> = no space
a) Commands:
Address<SP>command<CR><LF>
b) Response:
<CR><LF>address<NSP>prompt
For example:
Query pump 2 for withdrawal flow rate ( which is 0.2 ml/minute )
command: 2<SP>ratew?<CR><LF>
response: 0.2<SP>ml/m<CR><LF>2:
Query a single pump for infusion flow rate ( which is 0.2 ml/minute )
command: ratei?<CR><LF>
response: 0.2<SP>ml/m<CR><LF>:
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Operating Instructions (Continued)
RS232 COMMANDS (continued)
Prompts > running in infusion direction
<withdrawing
:stopped
NA not applicable
Eerror (see error? command)
carriage return <CR> All pumps chain interpret this as a stop command
pump address<CR> Pump with the specified address responds with a prompt
pump address (optional), Pump at the address executes the command and then
command<CR> responds with a prompt.
Note: If there are multiple pumps in the daisy chain and a pump address is not used
then all pumps will respond to the non-specific command and return prompts. Multiple
prompts results in a communications breakdown.
ump commands and responses
Note that mode selection and withdrawal and continuous mode commands are recognized
only by the infusion/withdrawal models.
run Starts pump running to present settings, returns prompt > or < If already
running command is ignored.
stop Stops pump if running, otherwise is ignored. Returns prompt :
dia nn.nn Sets syringe diameter in millimeters.
n = 0 to 9
run? Query run status, returns prompt.
del? Queries delivered volume. (Requires a dispense volume to be set).
Response: nnnnn<SP>u
Where nnnnn is ., 0 to 9
u are units, µl or ml
dia? Requests present diameter setting.
Response: nn.nn
Where n = 0 to 9
units always millimeters
ratei? Queries infusion rate.
Response: nnnnn<SP>u/u
Where nnnnn is ., 0 to 9
u/u are units, µl/m, µl/h, ml/m, or ml/h
ratew? Queries withdrawal rate.
Response: nnnnn<SP>u/u
Where nnnnn is ., 0 t o 9
u/u is rate unit
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Operating Instructions (Continued)
RS232 COMMANDS (continued)
ratei nnnnn u/u
Sets infusion rate.
Where is nnnnn is ., 0 to 9, and u/u are units.
Units required but if not specified then defaults to automatic setting
based on syringe diameter.
ratew nnnnn u/u
Sets withdrawal rate.
voli nnnnn uu
Sets infusion target volume.
Where nnnnn is ., 0 to 9
uu are units µl or ml
If units not specified then defaults to automatic setting.
volw nnnnn uu
Sets withdrawal target volume.
voli? Queries volume setting.
Response: nnnnn<SP>uu
Where nnnnn is ·,0 to 9
uu are units µl and ml
mode I Sets mode to infusion.
mode w Sets mode to withdrawal.
mode I/w Sets mode to infusion / withdrawal.
mode w/I Sets mode to withdrawal / infusion.
mode con Sets mode to continuous.
Note: A dispense volume must be entered before selecting I/W, W/I
and CON modes.
mode? Query mode.
Response I, W, I/W, W/I, CON
dir rev Changes direction of running pump. Available only in Infusion and
Withdrawal modes.
dir? Query direction.
Response I (infusion) or W (withdrawal).
Not applicable in infusion only models.
error? Command returns values from 0 to 7 as listed below:
0 = no errors
1 = serial error
2 = stall
3 = stall + serial error
4 = serial overrun
5 = serial error + serial overrun
6 = stall + serial overrun
7 = stall + serial error + serial overrun
Cole- armer®Dual & Multiple Syringe ump