52 analog 1 mode, 53 analog 2 mode, 54 setting time and date – Rice Lake BCi Belt Scale - Installation & Operation Manual Version 2.00 User Manual

Page 51: 55 interfacing a plc to the belt scale system

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BCi

Installation & Operation Manual - Supervisor Mode Parameters

45

4.52 Analog 1 Mode

Three settings are available with this parameter. They
are:

Rate - Tracks to the maximum rated
capacity of the belt scale (see Section
4.2).

Load - Tracks to the maximum total cell
build of the system (see Section 4.4)

Speed - Tracks to the maximum speed
value (see Section 4.36)

4.53 Analog 2 Mode

Three settings are available with this parameter. They
are:

Rate - Tracks to the maximum rated
capacity of the belt scale (see Section
4.2).

Load - Tracks to the maximum total cell
build of the system (see Section 4.4)

Speed - Tracks to the maximum speed
value (see Section 4.36)

4.54 Setting Time and Date

Press the

Time/Date

softkey from the supervisors mode

to access this parameter. The BCi prompts

Enter Date

X X / X X / 2 0 X X M M D D Y Y = >

. Enter in a new date in

MMDDYY format and press

enter

. The integrator then

prompts

Enter Time XX:XX AM/PM HHMM

. Enter in a new

time in 24 hour format and press

enter

.

4.55 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 written and read by a user
program. They can also be read or written from a
PLC. The command for a write value is a 304 and a
read 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 only step in the setpoint menu of the

BCi

is to

enable the setpoints to a Gross (KIND) and they will
be ready to act as “mailboxes”.

The following setpoints will contain these values from
the variable needed in the belt scale:

Setpoint

Value

Description

SP4

Clear totalizer any non-zero value.

SP97

Return belt speed

SP98

Return TN/HR (rate)

SP99

Return load

SP100

Return totalizer value

Table 4-1. Setpoint Values

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