Rice Lake BCi Belt Scale - Installation and Operation Manual Version 2.03 - Manual (Page 53)

Installation and Operation Manual - Supervisor Mode Parameters 47
4.56 Interfacing a PLC to the Belt Scale
System
Within the BCi , there are setpoints which contain four
numeric variables:
• Value (target)
• Bandwidth
• Preact
• Hysteresis
These setpoints can be read or written from a PLC.
The command to a write the value is a 304 and to read
the value is a 320. The other write values are 305, 306,
and 307 for the hysteresis, bandwidth and preact. The
read values are 321, 322, and 323. You will only be
using the value variables in each setpoint.
The following setpoints will contain these values from
the variable needed in the belt scale:
Table 4-2. Setpoint Values
Setpoint
Value Description
SP4 Clear totalizer when set to any non-zero
value.
SP97 Return belt speed
SP98 Return TN/HR (rate)
SP99 Return load
SP100 Return totalizer value
4.57 Special Serial Commands
In addition to the integrator’s standard EDP command
set (see your 920i installation manual, PN 69887), it
have seven special commands specific to the belt scale
functions. those commands are shown in Table
Command Function
F#1=MT Master total
F#1=BT Batch total
F#1=MR Master reset
F#1=BR Batch total reset
F#1=TPH Tons per hour
F#1=UID Integrator ID
F#1=RT Set totalizer
Table 4-3. Key Press Serial Commands