CV500BSC51 Omron, CV500BSC51 Datasheet - Page 53

• Manufacturer Part Number: CV500BSC51
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500BSC51

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Slave Mode Functions
5-1-4
5-2
5-2-1
36
Slave Mode Functions
Sending Data in Slave Mode
Receiving SRQ Messages in Master Mode
1,2,3...
Note
If an SRQ message is received from another device while the GP-IB Interface
Unit is operating in Master mode, the SRQ Received Flag (bit 12 of n+7) will
be turned ON. The status byte of the device that sent the SRQ message can
be read by performing serial polling.
1. The allocated DM settings can be set to start an interrupt program when
2. I/O REFRESH (IORF(097)) can be used in an interrupt task. In this case,
When the GP-IB Interface Unit is operating in Slave mode and there is a send
request sent from the system Controller to the Unit, the Talker Specification
Received Flag (bit 13 of n+7) will be turned ON.
Use the following procedure to send data in Slave mode.
1. Write the following 2 settings into buffer memory from the ladder program.
2. Write the following 2 settings into buffer memory from the ladder program.
(SRQ signal)
SRQ Received Flag
(BIt 12 of n+7)
Ladder program
(See note 1.)
• Transmission delimiter specification
• Timeout monitor time
• Number of bytes of transmission data
• Transmission data
an SRQ request is received.
always disable cyclic refreshing for the GP-IB Interface Unit with the PLC
Setup’s Special I/O Unit cyclic refresh setting.
(It isn’t necessary to make these settings if they are the same as the set-
tings in the allocated DM area words.)
CPU Unit
2. The SRQ
3. Perform serial
Received Flag
goes ON in n+7.
polling by
sending interface
messages.
GP-IB device is turned
ON and OFF.
Turned ON
by Unit.
Serial polling performed.
n = CIO 2000 + (10
Controller
(Master mode)
GP-IB
Interface Unit
Buffer
memory
1. An SRQ number
4. Read the status
is sent from a
GP-IB device.
byte. (The SRQ
signal is turned
OFF.)
unit number)
Turned OFF
by Unit.
GP-IB
Device
Section 5-2