User`s manual

Directions for use
7-18
7
Response time RI
When a personal computer is interpreter system, it executes programs one by one while interpreting.
This personal computer may not have finished its process before receiving the response from the
JW30H (JW-32CUM1). As a countermeasure, setting the response time RI in command (max.
600ms).
As the JW30H (JW-32CUM1) accesses memories after one operation cycle, the actual response time
is the total of setting value of RI in command and the waiting time of one operation cycle.
[Reference] Setting response time RI
It is difficult to recommend the optimum response time, as the optimum response time
is varied depending on the model of personal computer, the programming language
and the system program. First, set a fairly long time, then, shorten gradually.
RI
(HEX)
0
1
2
3
4
5
6
7
Response time (ms)
0
10
20
30
40
50
60
70
RI
(HEX)
8
9
A
B
C
D
E
F
Response time (ms)
80
90
100
200
300
400
500
600
Remarks
- There are some limits for handling bit numbers by commands and for the communication buffer of
personal computers. Be careful for handling bit numbers and communication buffers.
(2) Write mode
Write mode of PCs are "mode 0" (write prohibited for all memories) at power ON. Prior to writing
program from the personal computer, change write mode to "mode 1" or "mode 2" using EWR
command (setting of write mode). SWE command read out current status of writing mode.
Set write mode to "mode 0" as much as possible, except when writing date into PC. Each mode has
restrictions as follow:
Mode 0
Mode 1
Mode 2
Write prohibited for all memories
Write enable only for data memory
Write enable for all memories
Remarks
- Turn OFF JW-32CUM1 control module protect switch (write allowed) before executing write
commands and change to write mode 2 using EWR command.