Eaton XN300 - Page 327

38 XN-322-2SI-RS serial interface specialty module
38.6 Memory layout
323 XN300 slice modules 02/24 MN050002EN Eaton.com
0x4200 – 2 Control232
Setting up the
RS232 interface
Byte 0
Modem
Control
Register
Bit 0 1: Data Terminal
Ready
0x0100
Bit 1 1: Request to Send
Bit 2 Mode/de.
(fix) 0: RS 232
mode,
Bit 3 reserved
Bit 4 reserved
Bit 5 1: Echo
disabled (default)
Bit 6 reserved
Bit 7 reserved
Byte 1
Line
Control
Register
Bit 0-1
00
01
10
11
Data word length
0: 5 Bit
1: 6 Bit
2: 7 Bit
3: 8 Bit
Bit 2
Number of
stop bits
0:
1:
1 stop bit,
1.5 stop bits for 5-
bit data word
length
2 stop bits for 6-
bit, 7-bit, 8-bit
data word length
Bit 3 Parity Enable
0: No parity
1: Parity
Bit 4 Even Parity Select
0: Odd
1: Even
Bit 5 reserved
Bit 6 1: Set Break
Bit 7 reserved
0x4201 – 2 DivisorLatch232
Baud rate setting
examples
[in kbaud]
0xC0C0: 4800
0xC060: 9600
0xC030: 19200
0xC180: 38400
0xC010: 57600
0xC008: 115200
Bit 0-13 clock divider Freq/(16*baud
rate)
0x0102
Bit 14-15 input
frequency
select
00: 1.8432 MHz
01: 1 MHz
10: 7.3728 MHz
11: 14.7456 MHz
CAN
Object
Index
Default
CAN
Mapping
Size
(byte)
Local I/O
description
Local I/O
addresses