Welch Allyn SureTemp PlusModule - User Manual - Manual (Page 67)

SureTemp Plus Module OEM Implementation Quick Start
Welch Allyn OEM Technologies Confidential 67
9 - Quick Start
Introduction
This provides a quick-start reference to typical SureTemp Plus module operation. The intent is to
provide a reference to the simplest method to implement the SureTemp Plus module. Note that
this should not be considered as the only way to implement the module. The host has many
choices to consider with regard to power management, thermometer/temperature modes, error
handling, biotech or service, and other features.
The SureTemp Plus serial communications protocol is defined beginning on page 30.
Typical Start-up Sequence
It is assumed for this section that the user is familiar with the module’s power requirements and
mechanical interface. It is also assumed for the following steps that the host leaves all of the
module’s default settings unchanged from the factory settings.
1. The host applies power to module at J1.
2. The module performs the POST, which typically takes 2-4 seconds. No messages are sent to
the host during the POST.
3. The host sends <9401> Send Thermometer No Clear command to monitor the progress of
POST. The module responds with <9401> Send Thermometer No Clear response.
The <9401> response includes a Temp Status byte to declare the POST still in progress or
the POST complete.
• If no POST error is detected, the host continues to Step 5.
• If a POST error is detected, the host will have to determine whether to proceed or indicate
service.
4. The host can elect to set various features of the module to customize the operation based on
the application. For example, the host can use the <2A12> Temperature Method command to
select whether the device enters into normal predictive or monitor mode when a probe is
pulled.
It might also be desirable to use the <3503> Lock Probe Switch in order to temporarily control
access to probe use while the host is setting various functions during initialization. (Use
<3604> to set the probe in the well after locking the probe switch.)
5. The host sends <9434> Enable Asynchronous Messages command. The module responds
with <9434> Enable Asynchronous Messages response.
6. The probe is removed from the well and a probe cover applied.