1 ttl i/o operational controls, Db-9 connector ttl i/o – New Era NE-500 Multi-Phaser Programmable OEM Syringe User Manual
Page 43

New Era Pump Systems Inc.
www.SyringePump.com
Model NE-500/NE-501 Multi-Phaser™
Publication #1200-02
38
09/18/14
DB-9 Connector TTL I/O
Pin #
Definition
Type
Function
1
Vcc (5V)
Reference
Logic high reference. Power on indicator.
2
Operational Trigger
Command: TRG [aa]
Input
Configurable start/stop operational trigger input.
FT
Foot Switch
Falling edge: Start or stop trigger
FH
Foot Switch Hold
Falling edge: Start trigger
Rising edge: Stop trigger
F2
Foot Switch Reverse Rising edge: Start or stop trigger
LE
Level
Falling edge: Stop trigger
Rising edge: Start trigger
ST
Start only
Falling edge: Start trigger
T2
Start only Reverse
Rising edge: Start trigger
SP
Stop only
Falling edge: Stop trigger
P2
Stop only Reverse
Rising edge: Stop trigger
RL
Start on low level
Low level:
Start trigger
RH
Start on high level
High level:
Start trigger
SL
Stop on low level
Low level:
Stop trigger
SH
Stop on high level
High level:
Stop trigger
ET
Program function: redirect trigger to Event trap
BT
Program function: Redirects ‘Stop’ key to Event trap
3
Pumping Direction
Input
Changes pumping direction according to setup
Command:
DIN 0
DIN 1
Falling edge: Infuse
Withdraw
Rising edge: Withdraw
Infuse
4
Event Trigger
Input
Event input or user definable input
5
Program Output
Output
Program controlled output or user definable output
6
Program Input
Input
Program conditional input read by the “IF” program function.
Also user definable input.
Also used by the keypad lockout function.
7
Pump Motor Operating
Output
Setup Command: ROM 0
High: Pumping; Low: Not pumping
Setup Command: ROM 1
High: Pumping or Pause timer; Low: Not pumping
8
Pumping Direction
Output
High: Infuse; Low: Withdraw
9
Ground (0V)
Reference
Logic low reference
9.1 TTL I/O Operational Controls
Operational Trigger (Pin 2): The input signal on this pin controls the operation of the Pumping Program. Its
functionality is user configurable. Use the ‘TRG' command to configure the default settings for this input pin
(See Section 6.5, TTL I/O Operational Trigger Default Configuration).
Each option defines when the Operational Trigger input is activated. When activated, the trigger emulates a
‘Start/Stop’ key.
Foot Switch:
Operates like a ‘Start/Stop’ key, whereby each falling edge (contact to ground) either starts
or stops/pauses the Pumping Program.
Foot Switch Hold: Falling edge starts the Pumping Program and the rising edge stops the Pumping Program.
With a foot switch, the Pumping Program will run while the foot switch was held down.