EZT-430i Communications Manual
Operation
CSZ
EZT-430i
REVC
A.19
*E2
Parameter
Value
Description
1 Ramp
time
2
Ramp rate
3 Soak
4 Jump
5 End
*F1
EZT-430i automatic program steps are entered locally using a time range of hours/minutes or
minutes/seconds. EZT-430i cannot be programmed with step times of hours/minutes/seconds.
Therefore, when programming remotely via an F4S/D profile editor, all ramp type steps and soak type
steps must be programmed in either hours/minutes or minutes/seconds. EZT-430i will then select the
proper range time range for ramp/soak steps when downloading to its loop control boards based on
the maximum time programmed in any of the steps of that type in the profile.
For example, if all ramp steps have time entries of only minutes and seconds, EZT-430i will select
time units of minutes/seconds for the profile ramp steps. However, if a ramp step is programmed with
a non-zero entry for hours, all ramp steps will operate on a time base of hours and minutes. Any
ramp steps that were then programmed with a minutes/seconds entry will ignore the seconds and
only use the minutes. This may cause unexpected profile operation so be sure to program all profile
ramp/soak steps accordingly.
*F2
The units of measure and range of an input is dependant upon the configuration of the input and/or
the units of temperature selection (Celsius or Fahrenheit) of EZT-430i . The decimal point position for
the input is an implied value based on the decimal point selection for the input. Thus, a register value
of 345 can represent an actual process value of 345, 34.5, 3.45 or 0.345 depending upon the decimal
point configuration of the input.
6.2.1
Limitations of Profile Download/Operation (IMPORTANT – Please Read!)
The section covers the rules of use when sending F4S/D based profiles to the EZT-430i controller. These
rules must be followed in order to insure proper profile operation especially when using the Profile Editor tool
of WatView software. WatView’s operation can not be altered to comply with the manner in which EZT-430i
operates, so it is up to the end user to insure that profiles are created and sent to EZT-430i properly.
6.2.1.1
Sending Profiles to EZT-430i
The Watlow F4S/D controller is capable of storing up to 40 profiles with up to 256 steps. EZT-430i stores
profiles differently, therefore, only one profile (profile 1) can be sent to EZT-430i at a time. If another profile is
sent, it overwrites the previous profile.
When using the WatView Profile Editor, DO NOT attempt to “read profile image from controller”. Selecting
this function will cause WatView to get stuck in an infinite loop and the program will have to be shut down
manually and possibly require a reboot of the PC. EZT-430i does not support the read of a profile from its
memory. Only profile download is supported.
Thus, when using WatView software or other profile editing software made for the F4, profiles must be stored
on the PC as separate profile images with each containing a single profile. That single profile can then be
downloaded when required. Note that profiles can not exceed 64 steps. If a profile exceeds 64 steps
(including the end step), the download will fail without notice to the user and the previous profile will remain
loaded in memory on EZT-430i.
Note:
EZT-430i does not support the ramp rate step type. DO NOT
send profiles to EZT-430i with steps programmed for ramp rate or
unexpected operation may occur. Use ramp time step types only for
both local EZT-430i automatic programs and F4 programs downloaded
remotely via a PC.
