|
Square D Variables
| Sw
|
Register
|
| w-b
|
Digital
|
| Vv
|
Virtual Register
|
| Vv-b
|
Virtual Digital
|
| Where
|
|
|
|
w is the word number 1
to 32767
|
|
|
v is the word number 1
to 16000
|
|
|
b is the bit number 1
to 16
|
Digital, Int, Long, LongBCD, Real and String data types are
supported.
| Boards
form
|
|
| Board name: |
User supplied unique
name for the board
|
| Board type: |
SQUARED |
| Address: |
Board's memory start
segment (in hexadecimal). 0xCA00 to 0xD300 (in 0x100 4K)
increment. |
| I/O Port: |
Board's route number,
it must be between 0 and 99 |
| Interrupt: |
2,3,4,5,6 or 7. |
| Special Opt: |
Specify the following
network port parameters:
-b Enable SY/LINK to receive broadcast messages
from the network. The default is to disable broadcast.
-s Set maximum network size to 100 instead of the
default of 31.
-r N Set the network baud rate. Where N is 0,1,2 or 3 for
network baud rate of 62.5K, 125K, 250K and 500K respectively. The
default is 500K. |
| Ports
form
|
|
| Port name: |
User supplied unique
name for the port
|
| Port number: |
not used
|
| Board name: |
Use the "Board Name"
from the Boards form.
|
| Baud rate: |
* |
| Data bits: |
* |
| Stop bits: |
* |
| Parity: |
* |
| Special Opt: |
Special Opt Specify
the following RS-422 port parameters
-b Enable the RS-422 port to receive
broadcast message from the network. The default is to disable
broadcast.
-d Prevent other network devices from communicating
to the RS-422 port.
-n Set the RS-422 port to Net-To-Net mode. The
default is SY/MAX mode.
-p Set the RS-422 port to Peripheral mode. |
| I/O Devices
form
|
|
| Name: |
User supplied unique
name for the device
|
| Number: |
Network wide I/O
device number
|
| Address: |
Address Route to the
PLC. A blank route field means access to the registers on the
SY/LINK card.
|
| Protocol: |
SQUARED |
| Port name: |
Use the "Port Name"
from the Ports form.
|
* The baud rate, data bits and parity specify the parameters of
the RS-422 Port on the SY/LINK port.
Citect.ini options
[SQUARED]
MaxPending = 1
Block = 64 bytes
Retry = 1
Delay = 0
TimeOut = 2000 milliseconds
PollTime = 0
WatchTime = 30 seconds
Files
- SQUARED.DLL Square D SY/LINK Card Driver for windows
- SQUARED.DBF Square D variable template
Virtual Mailbox Registers
- Each square D card have 512 processor equivalent registers
which can be read from and written to by PLC and Citect. By
defining a unit with a blank address, that unit will behave like a
PLC with 512 registers.
- The virtual mailbox feature allows any square D I/O device to
have its own 16,000 read only registers. Each PLC update these
registers by writing to its own reserved area (Rreg) in the real
mailbox registers in the following format:
W1: Number of registers in packet including this 3 register
header.
W2: Citect I/O Device "Number".
W3: Start address of virtual register (1 to 16000)
W4 to W128: Data to go into virtual registers
- The user can see a trace of each of these unsolicited data
packet header by turning on debug error. i.e debug <portname>
error. Each trace will be of the form:
<Date><Time> Unsolicited Mailbox(Rreg) Length(W1)
Unit(W2) Reg(W3)
Special Statistic Counters
| Receive
Interrupts
|
Hardware interrupts
from card
|
| Transmit Frames
|
Frames
transmitted
|
| Receive Frames
|
Frames received
|
| Read
|
Read requests from
Citect
|
| Block Read
|
Read requests blocked
into a single read
|
| Unsolicited
|
Unsolicited messages
received
|
| GetHeader
|
Unsolicited messages
with good header
|
| GetData
|
Unsolicited messages
with good data
|
| ReRead
|
Card change flag
register modified while processing current interrupt
|
| Vread
|
Virtual read requests
from Citect
|
| Bad Header
|
Unsolicited messages
with bad header
|
| NoHeader
|
Unsolicited messages
with no header
|
| BadData
|
Unsolicited messages
with inconsistent data
|
| NoData
|
Unsolicited messages
with no data
|
| Errors
|
Errors detected
|
| Last Error
|
Last error code
|
| Init Channel
|
Number of INIT_CHANNEL
from Citect
|
| Init Unit
|
Number of INIT_UNIT
from Citect
|
| Write
|
Number of writes from
Citect
|
| VreadWait
|
Increments every time
the virtual registers are found to contain stale data. i.e data
that have not being update in the last 30 seconds
([squared]Watchtime).
|
|
