Watlow CPC400 - Manual (Page 149)

CPC400 Series User’s Guide Chapter 5: Menu and Parameter Reference
Doc. 0600-2900-2000 Watlow Anafaze 135
Values: For thermocouples and RTD inputs, same as the
input range (see Table 5.7 on page 104). For process, soft in-
teger, and pulse inputs, any value between the Input
Range Low and Input Range High parameters in the Input
menu.
Modbus Address (Loops 1 to 9): 45375 to 45383
Parameter Number: 135
LogicPro Driver: Database
LogicPro Address (Loops 1 to 9): 135.1 to 135.9
Decimal Placement for Modbus or LogicPro: see Dec-
imal Placement for Numeric Values on page 80.
Data Changed Register
This register is a tool for hosts which need to maintain a
mirror image of the CPC400 database. Using a first in, first
out stack, the change queue logs all changes to the data-
base that do not originate with the host.
The data changed register contains the parameter number
of the oldest change in the change queue. After the host
reads the register, the second oldest parameter number is
loaded, and so on. When there are no remaining changes to
be read, the register contains FF (hexadecimal).
This parameter is available only for serial communications
and LogicPro programs.
Values: -1 to 255
Modbus Address: 40791
Parameter Number: 50
LogicPro Driver: Database
LogicPro Address: 50.1
Firmware Identification
Indicates whether the flash memory chip contains stan-
dard or custom Watlow Anafaze firmware for the closed-
loop control program. (If a logic program is loaded onto the
flash memory chip, it has no effect on this parameter.)
This parameter is available only for serial communications
and LogicPro programs.
Values: 0 indicates standard firmware, any other value in-
dicates custom firmware.
Modbus Address: 40847
Parameter Number: 52
LogicPro Driver: Database
LogicPro Address: 52.1
Firmware Version
For serial communications and LogicPro programs, you can
retrieve the firmware version in three parts: major part,
minor part and revision letter.