37
Comparison to Previous Products Section 1-7
Note 1. For pre-Ver. 1.2 Units, the number of words that can be read and written
per frame (i.e., the text lengths) when using C-mode commands is different
for C-series Host Link Units and CS/CJ-series Serial Communications
Boards or Serial Communications Units. A host computer program previ-
ously used for C-series Host Link Units may not function correctly if it is
used in CS/CJ-series PLCs. When using Serial Communications
Boards/Units with Unit Ver. 1.2 or later, these programs can be reused by
setting the Host Link compatible device mode to mode C (C500/120) or
mode D (D200H). (Alternatively, check the host computer program before
using it and make any corrections required to handle different frame text
lengths. Refer to the CS/CJ-series Communications Commands Refer-
ence Manual (W342) for details.)
2. For CS-series PLCs, a high-speed NT Link is available only with Serial
Communications Boards/Units manufactured on or after December 20,
1999. With earlier models, only the standard NT Link is available.
The following tables shows the improvements made in the protocol macro
function.
Baud rate Host Link
communica-
tions
19,200 bps max. 115,200 bps max.
Protocol
macros
19,200 bps max. 38,400 bps max. (57,600 bps max. for Unit Ver. 1.2 or later)
NT Link
(1:N mode)
Standard NT Link Standard NT Link, high-speed NT Link (See note 2.)
No-protocol
communica-
tions
19,200 bps max. 57,600 bps max.
Serial Gate-
way
Not supported. 115,200 bps max.
Host Link com-
munications
Sup-
ported
com-
mands
C-
mode
(Host
Link)
com-
mands
Supported. Supported.
FINS
com-
mands
Not supported. Supported.
Slave-initi-
ated com-
munications
Boards: Data can be sent
with TXD(236) instruction.
Units: Not supported.
Boards and Units: FINS commands can be sent using
SEND(090), RECV(098), and CMND(490).
Modbus-
RTU slave
Not supported. Pre-Ver. 1.2: Not supported.
Unit Ver. 1.2: Not supported.
Unit Ver. 1.3 or later: 115,200 bps max.
Item C200HX/HG/HE CS CJ
Manufactured on December 20th, 1999
The year is indicated with the last digit. In this case, "9" indicates "1999."
Month of manufacture. October, November, and December are indicated
with X, Y, and Z respectively. In this case, the month is "December."
Day of manufacture. In this example, the day is "20."
NT31/631(C)-V2 are the only PTs for which high-speed NT link is supported.
Lot No: 20Z9
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